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Conserved domains on  [gi|1720379035|ref|XP_030103624|]
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spermatogenesis-associated protein 13 isoform X3 [Mus musculus]

Protein Classification

RhoGEF and PH_Collybistin_ASEF domain-containing protein( domain architecture ID 10878937)

protein containing domains SH3_ASEF, RhoGEF, and PH_Collybistin_ASEF

Graphical summary

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List of domain hits

Name Accession Description Interval E-value
PH_Collybistin_ASEF cd01224
Collybistin/APC-stimulated guanine nucleotide exchange factor pleckstrin homology (PH) domain; ...
1020-1158 3.59e-62

Collybistin/APC-stimulated guanine nucleotide exchange factor pleckstrin homology (PH) domain; Collybistin (also called PEM2) is homologous to the Dbl proteins ASEF (also called ARHGEF4/RhoGEF4) and SPATA13 (Spermatogenesis-associated protein 13; also called ASEF2). It activates CDC42 specifically and not any other Rho-family GTPases. Collybistin consists of an SH3 domain, followed by a RhoGEF/DH and PH domain. In Dbl proteins, the DH and PH domains catalyze the exchange of GDP for GTP in Rho GTPases, allowing them to signal to downstream effectors. It induces submembrane clustering of the receptor-associated peripheral membrane protein gephyrin, which is thought to form a scaffold underneath the postsynaptic membrane linking receptors to the cytoskeleton. It also acts as a tumor suppressor that links adenomatous polyposis coli (APC) protein, a negative regulator of the Wnt signaling pathway and promotes the phosphorylation and degradation of beta-catenin, to Cdc42. Autoinhibition of collybistin is accomplished by the binding of its SH3 domain with both the RhoGEF and PH domains to block access of Cdc42 to the GTPase-binding site. Inactivation promotes cancer progression. PH domains have diverse functions, but in general are involved in targeting proteins to the appropriate cellular location or in the interaction with a binding partner. They share little sequence conservation, but all have a common fold, which is electrostatically polarized. Less than 10% of PH domains bind phosphoinositide phosphates (PIPs) with high affinity and specificity. PH domains are distinguished from other PIP-binding domains by their specific high-affinity binding to PIPs with two vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which results in targeting some PH domain proteins to the plasma membrane. A few display strong specificity in lipid binding. Any specificity is usually determined by loop regions or insertions in the N-terminus of the domain, which are not conserved across all PH domains. PH domains are found in cellular signaling proteins such as serine/threonine kinase, tyrosine kinases, regulators of G-proteins, endocytotic GTPases, adaptors, as well as cytoskeletal associated molecules and in lipid associated enzymes.


:

Pssm-ID: 269931  Cd Length: 138  Bit Score: 207.88  E-value: 3.59e-62
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720379035 1020 LESIDKIARWQVSIVGWEGLDILDRSSELIHSGELTKITRqGKSQQRIFFLFDHQLVSCKKDLLRRDMLYYKGRMDMDEV 1099
Cdd:cd01224      1 MENLEKLAAWQSTVEGWEGEDLSDRSSELIHSGELTKISA-GRAQERTFFLFDHQLVYCKKDLLRRKNYIYKGRIDTDNM 79
                           90       100       110       120       130
                   ....*....|....*....|....*....|....*....|....*....|....*....
gi 1720379035 1100 ELVDVEDGRDKDWSLSLRNAFKLVSKATDEVHLFCARKQEDKARWLQAYADERRRVQED 1158
Cdd:cd01224     80 EIEDLPDGKDDESGVTVKNAWKIYNASKNKWYVLCAKSAEEKQRWLEAFAEEREKVEKD 138
RhoGEF smart00325
Guanine nucleotide exchange factor for Rho/Rac/Cdc42-like GTPases; Guanine nucleotide exchange ...
836-1015 3.14e-58

Guanine nucleotide exchange factor for Rho/Rac/Cdc42-like GTPases; Guanine nucleotide exchange factor for Rho/Rac/Cdc42-like GTPases Also called Dbl-homologous (DH) domain. It appears that PH domains invariably occur C-terminal to RhoGEF/DH domains. Improved coverage.


:

Pssm-ID: 214619 [Multi-domain]  Cd Length: 180  Bit Score: 198.29  E-value: 3.14e-58
                            10        20        30        40        50        60        70        80
                    ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720379035   836 VIQEIMNTERVYIKHLKDICEGYIRQCRKHTGMFTVAQLATIFGNIEDIYKFQRKFLKDLEKQYNKEEPHLSEIGSCFLE 915
Cdd:smart00325    1 VLKELLQTERNYVRDLKLLVEVFLKPLKKELKLLSPNELETLFGNIEEIYEFHRDFLDELEERIEEWDDSVERIGDVFLK 80
                            90       100       110       120       130       140       150       160
                    ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720379035   916 HQEGFAIYSEYCNNHPGACVELSNLMKHSKYRHFFEACRLLQQMIDIALDGFLLTPVQKICKYPLQLAELLKYTTQEHGD 995
Cdd:smart00325   81 LEEFFKIYSEYCSNHPDALELLKKLKKNPRFQKFLKEIESSPQCRRLTLESLLLKPVQRLTKYPLLLKELLKHTPEDHED 160
                           170       180
                    ....*....|....*....|
gi 1720379035   996 YNNIKAAYEAMKNVACLINE 1015
Cdd:smart00325  161 REDLKKALKAIKELANQVNE 180
SH3_ASEF cd11973
Src homology 3 domain of APC-Stimulated guanine nucleotide Exchange Factor; ASEF, also called ...
726-797 8.76e-42

Src homology 3 domain of APC-Stimulated guanine nucleotide Exchange Factor; ASEF, also called ARHGEF4, exists in an autoinhibited form and is activated upon binding of the tumor suppressor APC (adenomatous polyposis coli). GEFs activate small GTPases by exchanging bound GDP for free GTP. ASEF can activate Rac1 or Cdc42. Truncated ASEF, which is found in colorectal cancers, is constitutively active and has been shown to promote angiogenesis and cancer cell migration. ASEF contains a SH3 domain followed by RhoGEF (also called Dbl-homologous or DH) and Pleckstrin Homology (PH) domains. In its autoinhibited form, the SH3 domain of ASEF forms an extensive interface with the DH and PH domains, blocking the Rac binding site. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


:

Pssm-ID: 212906 [Multi-domain]  Cd Length: 73  Bit Score: 147.47  E-value: 8.76e-42
                           10        20        30        40        50        60        70
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|..
gi 1720379035  726 GGEQLAINELISDGSVVCAEALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFVRLRV 797
Cdd:cd11973      2 GGEQLAINELISDGSVVCAEALWDHVTMDDQELGFKAGDVIEVMDATNKEWWWGRVLDSEGWFPASFVRLRV 73
PHA03247 super family cl33720
large tegument protein UL36; Provisional
200-446 4.35e-05

large tegument protein UL36; Provisional


The actual alignment was detected with superfamily member PHA03247:

Pssm-ID: 223021 [Multi-domain]  Cd Length: 3151  Bit Score: 48.01  E-value: 4.35e-05
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720379035  200 PEPAVCEIQVRDPEPSRAvPLPRRSKSIDSLSVLKSSFKRKSASNltELQGDRQVPSRTLSSFFTDPEkpGGSERRTRRW 279
Cdd:PHA03247  2593 PQSARPRAPVDDRGDPRG-PAPPSPLPPDTHAPDPPPPSPSPAAN--EPDPHPPPTVPPPERPRDDPA--PGRVSRPRRA 2667
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720379035  280 RSPIRAKDFDRVLRlvsnvkdaAWKREAPRSAApGPGPGLGDENPLLAPRSKLHDDYSRRTSSSVEPDARRGGSPciPAP 359
Cdd:PHA03247  2668 RRLGRAAQASSPPQ--------RPRRRAARPTV-GSLTSLADPPPPPPTPEPAPHALVSATPLPPGPAAARQASP--ALP 2736
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720379035  360 CTTAPYAAPE-PHLDVDTAVFPLETKSAQPLGNDGPRASSPSPIPTDPEGLSQGSSEAHTGSQHPFNPVQLPTPL---RP 435
Cdd:PHA03247  2737 AAPAPPAVPAgPATPGGPARPARPPTTAGPPAPAPPAAPAAGPPRRLTRPAVASLSESRESLPSPWDPADPPAAVlapAA 2816
                          250
                   ....*....|.
gi 1720379035  436 TTPKPQSPQSP 446
Cdd:PHA03247  2817 ALPPAASPAGP 2827
 
Name Accession Description Interval E-value
PH_Collybistin_ASEF cd01224
Collybistin/APC-stimulated guanine nucleotide exchange factor pleckstrin homology (PH) domain; ...
1020-1158 3.59e-62

Collybistin/APC-stimulated guanine nucleotide exchange factor pleckstrin homology (PH) domain; Collybistin (also called PEM2) is homologous to the Dbl proteins ASEF (also called ARHGEF4/RhoGEF4) and SPATA13 (Spermatogenesis-associated protein 13; also called ASEF2). It activates CDC42 specifically and not any other Rho-family GTPases. Collybistin consists of an SH3 domain, followed by a RhoGEF/DH and PH domain. In Dbl proteins, the DH and PH domains catalyze the exchange of GDP for GTP in Rho GTPases, allowing them to signal to downstream effectors. It induces submembrane clustering of the receptor-associated peripheral membrane protein gephyrin, which is thought to form a scaffold underneath the postsynaptic membrane linking receptors to the cytoskeleton. It also acts as a tumor suppressor that links adenomatous polyposis coli (APC) protein, a negative regulator of the Wnt signaling pathway and promotes the phosphorylation and degradation of beta-catenin, to Cdc42. Autoinhibition of collybistin is accomplished by the binding of its SH3 domain with both the RhoGEF and PH domains to block access of Cdc42 to the GTPase-binding site. Inactivation promotes cancer progression. PH domains have diverse functions, but in general are involved in targeting proteins to the appropriate cellular location or in the interaction with a binding partner. They share little sequence conservation, but all have a common fold, which is electrostatically polarized. Less than 10% of PH domains bind phosphoinositide phosphates (PIPs) with high affinity and specificity. PH domains are distinguished from other PIP-binding domains by their specific high-affinity binding to PIPs with two vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which results in targeting some PH domain proteins to the plasma membrane. A few display strong specificity in lipid binding. Any specificity is usually determined by loop regions or insertions in the N-terminus of the domain, which are not conserved across all PH domains. PH domains are found in cellular signaling proteins such as serine/threonine kinase, tyrosine kinases, regulators of G-proteins, endocytotic GTPases, adaptors, as well as cytoskeletal associated molecules and in lipid associated enzymes.


Pssm-ID: 269931  Cd Length: 138  Bit Score: 207.88  E-value: 3.59e-62
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720379035 1020 LESIDKIARWQVSIVGWEGLDILDRSSELIHSGELTKITRqGKSQQRIFFLFDHQLVSCKKDLLRRDMLYYKGRMDMDEV 1099
Cdd:cd01224      1 MENLEKLAAWQSTVEGWEGEDLSDRSSELIHSGELTKISA-GRAQERTFFLFDHQLVYCKKDLLRRKNYIYKGRIDTDNM 79
                           90       100       110       120       130
                   ....*....|....*....|....*....|....*....|....*....|....*....
gi 1720379035 1100 ELVDVEDGRDKDWSLSLRNAFKLVSKATDEVHLFCARKQEDKARWLQAYADERRRVQED 1158
Cdd:cd01224     80 EIEDLPDGKDDESGVTVKNAWKIYNASKNKWYVLCAKSAEEKQRWLEAFAEEREKVEKD 138
RhoGEF smart00325
Guanine nucleotide exchange factor for Rho/Rac/Cdc42-like GTPases; Guanine nucleotide exchange ...
836-1015 3.14e-58

Guanine nucleotide exchange factor for Rho/Rac/Cdc42-like GTPases; Guanine nucleotide exchange factor for Rho/Rac/Cdc42-like GTPases Also called Dbl-homologous (DH) domain. It appears that PH domains invariably occur C-terminal to RhoGEF/DH domains. Improved coverage.


Pssm-ID: 214619 [Multi-domain]  Cd Length: 180  Bit Score: 198.29  E-value: 3.14e-58
                            10        20        30        40        50        60        70        80
                    ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720379035   836 VIQEIMNTERVYIKHLKDICEGYIRQCRKHTGMFTVAQLATIFGNIEDIYKFQRKFLKDLEKQYNKEEPHLSEIGSCFLE 915
Cdd:smart00325    1 VLKELLQTERNYVRDLKLLVEVFLKPLKKELKLLSPNELETLFGNIEEIYEFHRDFLDELEERIEEWDDSVERIGDVFLK 80
                            90       100       110       120       130       140       150       160
                    ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720379035   916 HQEGFAIYSEYCNNHPGACVELSNLMKHSKYRHFFEACRLLQQMIDIALDGFLLTPVQKICKYPLQLAELLKYTTQEHGD 995
Cdd:smart00325   81 LEEFFKIYSEYCSNHPDALELLKKLKKNPRFQKFLKEIESSPQCRRLTLESLLLKPVQRLTKYPLLLKELLKHTPEDHED 160
                           170       180
                    ....*....|....*....|
gi 1720379035   996 YNNIKAAYEAMKNVACLINE 1015
Cdd:smart00325  161 REDLKKALKAIKELANQVNE 180
RhoGEF cd00160
Guanine nucleotide exchange factor for Rho/Rac/Cdc42-like GTPases; Also called Dbl-homologous ...
833-1014 4.95e-56

Guanine nucleotide exchange factor for Rho/Rac/Cdc42-like GTPases; Also called Dbl-homologous (DH) domain. It appears that PH domains invariably occur C-terminal to RhoGEF/DH domains.


Pssm-ID: 238091 [Multi-domain]  Cd Length: 181  Bit Score: 192.13  E-value: 4.95e-56
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720379035  833 RTNVIQEIMNTERVYIKHLKDICEGYIRQCRKHTGMFTVAQLATIFGNIEDIYKFQRKFLKDLEKQYNKEEPHLSEIGSC 912
Cdd:cd00160      1 RQEVIKELLQTERNYVRDLKLLVEVFLKPLDKELLPLSPEEVELLFGNIEEIYEFHRIFLKSLEERVEEWDKSGPRIGDV 80
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720379035  913 FLEHQEGFAIYSEYCNNHPGACVELSNLMKHSkyrHFFEACRLLQQ--MIDIALDGFLLTPVQKICKYPLQLAELLKYTT 990
Cdd:cd00160     81 FLKLAPFFKIYSEYCSNHPDALELLKKLKKFN---KFFQEFLEKAEseCGRLKLESLLLKPVQRLTKYPLLLKELLKHTP 157
                          170       180
                   ....*....|....*....|....
gi 1720379035  991 QEHGDYNNIKAAYEAMKNVACLIN 1014
Cdd:cd00160    158 DGHEDREDLKKALEAIKEVASQVN 181
RhoGEF pfam00621
RhoGEF domain; Guanine nucleotide exchange factor for Rho/Rac/Cdc42-like GTPases Also called ...
836-1014 2.63e-54

RhoGEF domain; Guanine nucleotide exchange factor for Rho/Rac/Cdc42-like GTPases Also called Dbl-homologous (DH) domain. It appears that pfam00169 domains invariably occur C-terminal to RhoGEF/DH domains.


Pssm-ID: 459876 [Multi-domain]  Cd Length: 176  Bit Score: 187.12  E-value: 2.63e-54
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720379035  836 VIQEIMNTERVYIKHLKDICEGYIRQCRKhTGMFTVAQLATIFGNIEDIYKFQRKFLkdLEKQyNKEEPHLSEIGSCFLE 915
Cdd:pfam00621    1 VIKELLQTERSYVRDLEILVEVFLPPNSK-PLSESEEEIKTIFSNIEEIYELHRQLL--LEEL-LKEWISIQRIGDIFLK 76
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720379035  916 HQEGFAIYSEYCNNHPGACVELSNLMKHSK-YRHFFEACRLLQQMIDIALDGFLLTPVQKICKYPLQLAELLKYTTQEHG 994
Cdd:pfam00621   77 FAPGFKVYSTYCSNYPKALKLLKKLLKKNPkFRAFLEELEANPECRGLDLNSFLIKPVQRIPRYPLLLKELLKHTPPDHP 156
                          170       180
                   ....*....|....*....|
gi 1720379035  995 DYNNIKAAYEAMKNVACLIN 1014
Cdd:pfam00621  157 DYEDLKKALEAIKEVAKQIN 176
SH3_ASEF cd11973
Src homology 3 domain of APC-Stimulated guanine nucleotide Exchange Factor; ASEF, also called ...
726-797 8.76e-42

Src homology 3 domain of APC-Stimulated guanine nucleotide Exchange Factor; ASEF, also called ARHGEF4, exists in an autoinhibited form and is activated upon binding of the tumor suppressor APC (adenomatous polyposis coli). GEFs activate small GTPases by exchanging bound GDP for free GTP. ASEF can activate Rac1 or Cdc42. Truncated ASEF, which is found in colorectal cancers, is constitutively active and has been shown to promote angiogenesis and cancer cell migration. ASEF contains a SH3 domain followed by RhoGEF (also called Dbl-homologous or DH) and Pleckstrin Homology (PH) domains. In its autoinhibited form, the SH3 domain of ASEF forms an extensive interface with the DH and PH domains, blocking the Rac binding site. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212906 [Multi-domain]  Cd Length: 73  Bit Score: 147.47  E-value: 8.76e-42
                           10        20        30        40        50        60        70
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|..
gi 1720379035  726 GGEQLAINELISDGSVVCAEALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFVRLRV 797
Cdd:cd11973      2 GGEQLAINELISDGSVVCAEALWDHVTMDDQELGFKAGDVIEVMDATNKEWWWGRVLDSEGWFPASFVRLRV 73
SH3 smart00326
Src homology 3 domains; Src homology 3 (SH3) domains bind to target proteins through sequences ...
740-794 6.71e-15

Src homology 3 domains; Src homology 3 (SH3) domains bind to target proteins through sequences containing proline and hydrophobic amino acids. Pro-containing polypeptides may bind to SH3 domains in 2 different binding orientations.


Pssm-ID: 214620 [Multi-domain]  Cd Length: 56  Bit Score: 69.87  E-value: 6.71e-15
                            10        20        30        40        50
                    ....*....|....*....|....*....|....*....|....*....|....*.
gi 1720379035   740 SVVCAEALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNED-KEAWFPASFVR 794
Cdd:smart00326    1 EGPQVRALYDYTAQDPDELSFKKGDIITVLEKSDDGWWKGRLGRgKEGLFPSNYVE 56
PH smart00233
Pleckstrin homology domain; Domain commonly found in eukaryotic signalling proteins. The ...
1048-1147 1.08e-12

Pleckstrin homology domain; Domain commonly found in eukaryotic signalling proteins. The domain family possesses multiple functions including the abilities to bind inositol phosphates, and various proteins. PH domains have been found to possess inserted domains (such as in PLC gamma, syntrophins) and to be inserted within other domains. Mutations in Brutons tyrosine kinase (Btk) within its PH domain cause X-linked agammaglobulinaemia (XLA) in patients. Point mutations cluster into the positively charged end of the molecule around the predicted binding site for phosphatidylinositol lipids.


Pssm-ID: 214574 [Multi-domain]  Cd Length: 102  Bit Score: 65.26  E-value: 1.08e-12
                            10        20        30        40        50        60        70        80
                    ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720379035  1048 LIHSGELTKITRQGKS--QQRIFFLFDHQLVSCKKDLLRRDmLYYKGRMDMDEVELVDVEDGRDKDWslslRNAFKLVSK 1125
Cdd:smart00233    1 VIKEGWLYKKSGGGKKswKKRYFVLFNSTLLYYKSKKDKKS-YKPKGSIDLSGCTVREAPDPDSSKK----PHCFEIKTS 75
                            90       100
                    ....*....|....*....|..
gi 1720379035  1126 aTDEVHLFCARKQEDKARWLQA 1147
Cdd:smart00233   76 -DRKTLLLQAESEEEREKWVEA 96
ROM1 COG5422
RhoGEF, Guanine nucleotide exchange factor for Rho/Rac/Cdc42-like GTPases [Signal transduction ...
828-1079 1.42e-10

RhoGEF, Guanine nucleotide exchange factor for Rho/Rac/Cdc42-like GTPases [Signal transduction mechanisms];


Pssm-ID: 227709 [Multi-domain]  Cd Length: 1175  Bit Score: 66.07  E-value: 1.42e-10
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720379035  828 SQQQMRTNVIQEIMNTERVYIKHLKDICEGYIRQCRKHTGMFTVAQ---LATIFGNIEDIYKFQRKFLKDLEKQYNKEeP 904
Cdd:COG5422    480 KQEIKRQEAIYEVIYTERDFVKDLEYLRDTWIKPLEESNIIPENARrnfIKHVFANINEIYAVNSKLLKALTNRQCLS-P 558
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720379035  905 HLSEIGSCFLEHQEGFAIYSEYCNNHPGACVEL----SNLMKHSKYRHFFEACRLLQQMidiALDGFLLTPVQKICKYPL 980
Cdd:COG5422    559 IVNGIADIFLDYVPKFEPFIKYGASQPYAKYEFerekSVNPNFARFDHEVERLDESRKL---ELDGYLTKPTTRLARYPL 635
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720379035  981 QLAELLKYTTQEHGDYNNIKAAYEAMKNVACLINERKRKLE---SIDKIARWQVSIVGWEGLDILDRSSELIHSGELtki 1057
Cdd:COG5422    636 LLEEVLKFTDPDNPDTEDIPKVIDMLREFLSRLNFESGKAEnrgDLFHLNQQLLFKPEYVNLGLNDEYRKIIFKGVL--- 712
                          250       260
                   ....*....|....*....|....*....
gi 1720379035 1058 TRQGKSQQRI-------FFLFDHQLVSCK 1079
Cdd:COG5422    713 KRKAKSKTDGslrgdiqFFLLDNMLLFCK 741
SH3_1 pfam00018
SH3 domain; SH3 (Src homology 3) domains are often indicative of a protein involved in signal ...
746-790 2.92e-10

SH3 domain; SH3 (Src homology 3) domains are often indicative of a protein involved in signal transduction related to cytoskeletal organization. First described in the Src cytoplasmic tyrosine kinase. The structure is a partly opened beta barrel.


Pssm-ID: 394975 [Multi-domain]  Cd Length: 47  Bit Score: 56.44  E-value: 2.92e-10
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*.
gi 1720379035  746 ALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRN-EDKEAWFPA 790
Cdd:pfam00018    2 ALYDYTAQEPDELSFKKGDIIIVLEKSEDGWWKGRNkGGKEGLIPS 47
PH pfam00169
PH domain; PH stands for pleckstrin homology.
1048-1147 5.45e-08

PH domain; PH stands for pleckstrin homology.


Pssm-ID: 459697 [Multi-domain]  Cd Length: 105  Bit Score: 52.18  E-value: 5.45e-08
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720379035 1048 LIHSGELTKITRQGKS--QQRIFFLFDHQLVSCKKDLLRRDmLYYKGRMDMDEVELVDVEDGRDKDwslsLRNAFKLVSK 1125
Cdd:pfam00169    1 VVKEGWLLKKGGGKKKswKKRYFVLFDGSLLYYKDDKSGKS-KEPKGSISLSGCEVVEVVASDSPK----RKFCFELRTG 75
                           90       100
                   ....*....|....*....|....
gi 1720379035 1126 ATD--EVHLFCARKQEDKARWLQA 1147
Cdd:pfam00169   76 ERTgkRTYLLQAESEEERKDWIKA 99
PHA03247 PHA03247
large tegument protein UL36; Provisional
200-446 4.35e-05

large tegument protein UL36; Provisional


Pssm-ID: 223021 [Multi-domain]  Cd Length: 3151  Bit Score: 48.01  E-value: 4.35e-05
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720379035  200 PEPAVCEIQVRDPEPSRAvPLPRRSKSIDSLSVLKSSFKRKSASNltELQGDRQVPSRTLSSFFTDPEkpGGSERRTRRW 279
Cdd:PHA03247  2593 PQSARPRAPVDDRGDPRG-PAPPSPLPPDTHAPDPPPPSPSPAAN--EPDPHPPPTVPPPERPRDDPA--PGRVSRPRRA 2667
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720379035  280 RSPIRAKDFDRVLRlvsnvkdaAWKREAPRSAApGPGPGLGDENPLLAPRSKLHDDYSRRTSSSVEPDARRGGSPciPAP 359
Cdd:PHA03247  2668 RRLGRAAQASSPPQ--------RPRRRAARPTV-GSLTSLADPPPPPPTPEPAPHALVSATPLPPGPAAARQASP--ALP 2736
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720379035  360 CTTAPYAAPE-PHLDVDTAVFPLETKSAQPLGNDGPRASSPSPIPTDPEGLSQGSSEAHTGSQHPFNPVQLPTPL---RP 435
Cdd:PHA03247  2737 AAPAPPAVPAgPATPGGPARPARPPTTAGPPAPAPPAAPAAGPPRRLTRPAVASLSESRESLPSPWDPADPPAAVlapAA 2816
                          250
                   ....*....|.
gi 1720379035  436 TTPKPQSPQSP 446
Cdd:PHA03247  2817 ALPPAASPAGP 2827
 
Name Accession Description Interval E-value
PH_Collybistin_ASEF cd01224
Collybistin/APC-stimulated guanine nucleotide exchange factor pleckstrin homology (PH) domain; ...
1020-1158 3.59e-62

Collybistin/APC-stimulated guanine nucleotide exchange factor pleckstrin homology (PH) domain; Collybistin (also called PEM2) is homologous to the Dbl proteins ASEF (also called ARHGEF4/RhoGEF4) and SPATA13 (Spermatogenesis-associated protein 13; also called ASEF2). It activates CDC42 specifically and not any other Rho-family GTPases. Collybistin consists of an SH3 domain, followed by a RhoGEF/DH and PH domain. In Dbl proteins, the DH and PH domains catalyze the exchange of GDP for GTP in Rho GTPases, allowing them to signal to downstream effectors. It induces submembrane clustering of the receptor-associated peripheral membrane protein gephyrin, which is thought to form a scaffold underneath the postsynaptic membrane linking receptors to the cytoskeleton. It also acts as a tumor suppressor that links adenomatous polyposis coli (APC) protein, a negative regulator of the Wnt signaling pathway and promotes the phosphorylation and degradation of beta-catenin, to Cdc42. Autoinhibition of collybistin is accomplished by the binding of its SH3 domain with both the RhoGEF and PH domains to block access of Cdc42 to the GTPase-binding site. Inactivation promotes cancer progression. PH domains have diverse functions, but in general are involved in targeting proteins to the appropriate cellular location or in the interaction with a binding partner. They share little sequence conservation, but all have a common fold, which is electrostatically polarized. Less than 10% of PH domains bind phosphoinositide phosphates (PIPs) with high affinity and specificity. PH domains are distinguished from other PIP-binding domains by their specific high-affinity binding to PIPs with two vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which results in targeting some PH domain proteins to the plasma membrane. A few display strong specificity in lipid binding. Any specificity is usually determined by loop regions or insertions in the N-terminus of the domain, which are not conserved across all PH domains. PH domains are found in cellular signaling proteins such as serine/threonine kinase, tyrosine kinases, regulators of G-proteins, endocytotic GTPases, adaptors, as well as cytoskeletal associated molecules and in lipid associated enzymes.


Pssm-ID: 269931  Cd Length: 138  Bit Score: 207.88  E-value: 3.59e-62
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720379035 1020 LESIDKIARWQVSIVGWEGLDILDRSSELIHSGELTKITRqGKSQQRIFFLFDHQLVSCKKDLLRRDMLYYKGRMDMDEV 1099
Cdd:cd01224      1 MENLEKLAAWQSTVEGWEGEDLSDRSSELIHSGELTKISA-GRAQERTFFLFDHQLVYCKKDLLRRKNYIYKGRIDTDNM 79
                           90       100       110       120       130
                   ....*....|....*....|....*....|....*....|....*....|....*....
gi 1720379035 1100 ELVDVEDGRDKDWSLSLRNAFKLVSKATDEVHLFCARKQEDKARWLQAYADERRRVQED 1158
Cdd:cd01224     80 EIEDLPDGKDDESGVTVKNAWKIYNASKNKWYVLCAKSAEEKQRWLEAFAEEREKVEKD 138
RhoGEF smart00325
Guanine nucleotide exchange factor for Rho/Rac/Cdc42-like GTPases; Guanine nucleotide exchange ...
836-1015 3.14e-58

Guanine nucleotide exchange factor for Rho/Rac/Cdc42-like GTPases; Guanine nucleotide exchange factor for Rho/Rac/Cdc42-like GTPases Also called Dbl-homologous (DH) domain. It appears that PH domains invariably occur C-terminal to RhoGEF/DH domains. Improved coverage.


Pssm-ID: 214619 [Multi-domain]  Cd Length: 180  Bit Score: 198.29  E-value: 3.14e-58
                            10        20        30        40        50        60        70        80
                    ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720379035   836 VIQEIMNTERVYIKHLKDICEGYIRQCRKHTGMFTVAQLATIFGNIEDIYKFQRKFLKDLEKQYNKEEPHLSEIGSCFLE 915
Cdd:smart00325    1 VLKELLQTERNYVRDLKLLVEVFLKPLKKELKLLSPNELETLFGNIEEIYEFHRDFLDELEERIEEWDDSVERIGDVFLK 80
                            90       100       110       120       130       140       150       160
                    ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720379035   916 HQEGFAIYSEYCNNHPGACVELSNLMKHSKYRHFFEACRLLQQMIDIALDGFLLTPVQKICKYPLQLAELLKYTTQEHGD 995
Cdd:smart00325   81 LEEFFKIYSEYCSNHPDALELLKKLKKNPRFQKFLKEIESSPQCRRLTLESLLLKPVQRLTKYPLLLKELLKHTPEDHED 160
                           170       180
                    ....*....|....*....|
gi 1720379035   996 YNNIKAAYEAMKNVACLINE 1015
Cdd:smart00325  161 REDLKKALKAIKELANQVNE 180
RhoGEF cd00160
Guanine nucleotide exchange factor for Rho/Rac/Cdc42-like GTPases; Also called Dbl-homologous ...
833-1014 4.95e-56

Guanine nucleotide exchange factor for Rho/Rac/Cdc42-like GTPases; Also called Dbl-homologous (DH) domain. It appears that PH domains invariably occur C-terminal to RhoGEF/DH domains.


Pssm-ID: 238091 [Multi-domain]  Cd Length: 181  Bit Score: 192.13  E-value: 4.95e-56
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720379035  833 RTNVIQEIMNTERVYIKHLKDICEGYIRQCRKHTGMFTVAQLATIFGNIEDIYKFQRKFLKDLEKQYNKEEPHLSEIGSC 912
Cdd:cd00160      1 RQEVIKELLQTERNYVRDLKLLVEVFLKPLDKELLPLSPEEVELLFGNIEEIYEFHRIFLKSLEERVEEWDKSGPRIGDV 80
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720379035  913 FLEHQEGFAIYSEYCNNHPGACVELSNLMKHSkyrHFFEACRLLQQ--MIDIALDGFLLTPVQKICKYPLQLAELLKYTT 990
Cdd:cd00160     81 FLKLAPFFKIYSEYCSNHPDALELLKKLKKFN---KFFQEFLEKAEseCGRLKLESLLLKPVQRLTKYPLLLKELLKHTP 157
                          170       180
                   ....*....|....*....|....
gi 1720379035  991 QEHGDYNNIKAAYEAMKNVACLIN 1014
Cdd:cd00160    158 DGHEDREDLKKALEAIKEVASQVN 181
RhoGEF pfam00621
RhoGEF domain; Guanine nucleotide exchange factor for Rho/Rac/Cdc42-like GTPases Also called ...
836-1014 2.63e-54

RhoGEF domain; Guanine nucleotide exchange factor for Rho/Rac/Cdc42-like GTPases Also called Dbl-homologous (DH) domain. It appears that pfam00169 domains invariably occur C-terminal to RhoGEF/DH domains.


Pssm-ID: 459876 [Multi-domain]  Cd Length: 176  Bit Score: 187.12  E-value: 2.63e-54
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720379035  836 VIQEIMNTERVYIKHLKDICEGYIRQCRKhTGMFTVAQLATIFGNIEDIYKFQRKFLkdLEKQyNKEEPHLSEIGSCFLE 915
Cdd:pfam00621    1 VIKELLQTERSYVRDLEILVEVFLPPNSK-PLSESEEEIKTIFSNIEEIYELHRQLL--LEEL-LKEWISIQRIGDIFLK 76
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720379035  916 HQEGFAIYSEYCNNHPGACVELSNLMKHSK-YRHFFEACRLLQQMIDIALDGFLLTPVQKICKYPLQLAELLKYTTQEHG 994
Cdd:pfam00621   77 FAPGFKVYSTYCSNYPKALKLLKKLLKKNPkFRAFLEELEANPECRGLDLNSFLIKPVQRIPRYPLLLKELLKHTPPDHP 156
                          170       180
                   ....*....|....*....|
gi 1720379035  995 DYNNIKAAYEAMKNVACLIN 1014
Cdd:pfam00621  157 DYEDLKKALEAIKEVAKQIN 176
SH3_ASEF cd11973
Src homology 3 domain of APC-Stimulated guanine nucleotide Exchange Factor; ASEF, also called ...
726-797 8.76e-42

Src homology 3 domain of APC-Stimulated guanine nucleotide Exchange Factor; ASEF, also called ARHGEF4, exists in an autoinhibited form and is activated upon binding of the tumor suppressor APC (adenomatous polyposis coli). GEFs activate small GTPases by exchanging bound GDP for free GTP. ASEF can activate Rac1 or Cdc42. Truncated ASEF, which is found in colorectal cancers, is constitutively active and has been shown to promote angiogenesis and cancer cell migration. ASEF contains a SH3 domain followed by RhoGEF (also called Dbl-homologous or DH) and Pleckstrin Homology (PH) domains. In its autoinhibited form, the SH3 domain of ASEF forms an extensive interface with the DH and PH domains, blocking the Rac binding site. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212906 [Multi-domain]  Cd Length: 73  Bit Score: 147.47  E-value: 8.76e-42
                           10        20        30        40        50        60        70
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|..
gi 1720379035  726 GGEQLAINELISDGSVVCAEALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFVRLRV 797
Cdd:cd11973      2 GGEQLAINELISDGSVVCAEALWDHVTMDDQELGFKAGDVIEVMDATNKEWWWGRVLDSEGWFPASFVRLRV 73
SH3_ASEF2 cd11974
Src homology 3 domain of APC-Stimulated guanine nucleotide Exchange Factor 2; ASEF2, also ...
742-795 3.10e-37

Src homology 3 domain of APC-Stimulated guanine nucleotide Exchange Factor 2; ASEF2, also called Spermatogenesis-associated protein 13 (SPATA13), is a GEF that localizes with actin at the leading edge of cells and is important in cell migration and adhesion dynamics. GEFs activate small GTPases by exchanging bound GDP for free GTP. ASEF2 can activate both Rac 1 and Cdc42, but only Rac1 activation is necessary for increased cell migration and adhesion turnover. Together with APC (adenomatous polyposis coli) and Neurabin2, a scaffold protein that binds F-actin, it is involved in regulating HGF-induced cell migration. ASEF2 contains a SH3 domain followed by RhoGEF (also called Dbl-homologous or DH) and Pleckstrin Homology (PH) domains. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212907  Cd Length: 54  Bit Score: 133.65  E-value: 3.10e-37
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1720379035  742 VCAEALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFVRL 795
Cdd:cd11974      1 VYAEALWDHVTMDDQELAFKAGDVIRVLEASNKDWWWGRNEDREAWFPASFVRL 54
SH3_ARHGEF9_like cd11828
Src homology 3 domain of ARHGEF9-like Rho guanine nucleotide exchange factors; Members of this ...
743-795 8.88e-33

Src homology 3 domain of ARHGEF9-like Rho guanine nucleotide exchange factors; Members of this family contain a SH3 domain followed by RhoGEF (also called Dbl-homologous or DH) and Pleckstrin Homology (PH) domains. They include the Rho guanine nucleotide exchange factors ARHGEF9, ASEF (also called ARHGEF4), ASEF2, and similar proteins. GEFs activate small GTPases by exchanging bound GDP for free GTP. ARHGEF9 specifically activates Cdc42, while both ASEF and ASEF2 can activate Rac1 and Cdc42. ARHGEF9 is highly expressed in the brain and it interacts with gephyrin, a postsynaptic protein associated with GABA and glycine receptors. ASEF plays a role in angiogenesis and cell migration. ASEF2 is important in cell migration and adhesion dynamics. ASEF exists in an autoinhibited form and is activated upon binding of the tumor suppressor APC (adenomatous polyposis coli), leading to the activation of Rac1 or Cdc42. In its autoinhibited form, the SH3 domain of ASEF forms an extensive interface with the DH and PH domains, blocking the Rac binding site. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212762 [Multi-domain]  Cd Length: 53  Bit Score: 120.95  E-value: 8.88e-33
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1720379035  743 CAEALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFVRL 795
Cdd:cd11828      1 LAEALWDHVTMDPEELGFKAGDVIEVLDMSDKDWWWGSIRDEEGWFPASFVRL 53
SH3_ARHGEF9 cd11975
Src homology 3 domain of the Rho guanine nucleotide exchange factor ARHGEF9; ARHGEF9, also ...
740-799 1.90e-27

Src homology 3 domain of the Rho guanine nucleotide exchange factor ARHGEF9; ARHGEF9, also called PEM2 or collybistin, selectively activates Cdc42 by exchanging bound GDP for free GTP. It is highly expressed in the brain and it interacts with gephyrin, a postsynaptic protein associated with GABA and glycine receptors. Mutations in the ARHGEF9 gene cause X-linked mental retardation with associated features like seizures, hyper-anxiety, aggressive behavior, and sensory hyperarousal. ARHGEF9 contains a SH3 domain followed by RhoGEF (also called Dbl-homologous or DH) and Pleckstrin Homology (PH) domains. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212908  Cd Length: 62  Bit Score: 105.95  E-value: 1.90e-27
                           10        20        30        40        50        60
                   ....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720379035  740 SVVCAEALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFVRLRVNQ 799
Cdd:cd11975      3 SIVSAEAVWDHVTMANRELAFKAGDVIKVLDASNKDWWWGQIDDEEGWFPASFVRLWVNQ 62
SH3 smart00326
Src homology 3 domains; Src homology 3 (SH3) domains bind to target proteins through sequences ...
740-794 6.71e-15

Src homology 3 domains; Src homology 3 (SH3) domains bind to target proteins through sequences containing proline and hydrophobic amino acids. Pro-containing polypeptides may bind to SH3 domains in 2 different binding orientations.


Pssm-ID: 214620 [Multi-domain]  Cd Length: 56  Bit Score: 69.87  E-value: 6.71e-15
                            10        20        30        40        50
                    ....*....|....*....|....*....|....*....|....*....|....*.
gi 1720379035   740 SVVCAEALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNED-KEAWFPASFVR 794
Cdd:smart00326    1 EGPQVRALYDYTAQDPDELSFKKGDIITVLEKSDDGWWKGRLGRgKEGLFPSNYVE 56
SH3 cd00174
Src Homology 3 domain superfamily; Src Homology 3 (SH3) domains are protein interaction ...
744-792 8.93e-15

Src Homology 3 domain superfamily; Src Homology 3 (SH3) domains are protein interaction domains that bind proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. Thus, they are referred to as proline-recognition domains (PRDs). SH3 domains are less selective and show more diverse specificity compared to other PRDs. They have been shown to bind peptide sequences that lack the PxxP motif; examples include the PxxDY motif of Eps8 and the RKxxYxxY sequence in SKAP55. SH3 domain containing proteins play versatile and diverse roles in the cell, including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies, among others. Many members of this superfamily are adaptor proteins that associate with a number of protein partners, facilitating complex formation and signal transduction.


Pssm-ID: 212690 [Multi-domain]  Cd Length: 51  Bit Score: 69.41  E-value: 8.93e-15
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1720379035  744 AEALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNED-KEAWFPASF 792
Cdd:cd00174      2 ARALYDYEAQDDDELSFKKGDIITVLEKDDDGWWEGELNGgREGLFPANY 51
PH smart00233
Pleckstrin homology domain; Domain commonly found in eukaryotic signalling proteins. The ...
1048-1147 1.08e-12

Pleckstrin homology domain; Domain commonly found in eukaryotic signalling proteins. The domain family possesses multiple functions including the abilities to bind inositol phosphates, and various proteins. PH domains have been found to possess inserted domains (such as in PLC gamma, syntrophins) and to be inserted within other domains. Mutations in Brutons tyrosine kinase (Btk) within its PH domain cause X-linked agammaglobulinaemia (XLA) in patients. Point mutations cluster into the positively charged end of the molecule around the predicted binding site for phosphatidylinositol lipids.


Pssm-ID: 214574 [Multi-domain]  Cd Length: 102  Bit Score: 65.26  E-value: 1.08e-12
                            10        20        30        40        50        60        70        80
                    ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720379035  1048 LIHSGELTKITRQGKS--QQRIFFLFDHQLVSCKKDLLRRDmLYYKGRMDMDEVELVDVEDGRDKDWslslRNAFKLVSK 1125
Cdd:smart00233    1 VIKEGWLYKKSGGGKKswKKRYFVLFNSTLLYYKSKKDKKS-YKPKGSIDLSGCTVREAPDPDSSKK----PHCFEIKTS 75
                            90       100
                    ....*....|....*....|..
gi 1720379035  1126 aTDEVHLFCARKQEDKARWLQA 1147
Cdd:smart00233   76 -DRKTLLLQAESEEEREKWVEA 96
SH3_p47phox_like cd11856
Src homology 3 domains of the p47phox subunit of NADPH oxidase and similar domains; This ...
745-794 5.39e-12

Src homology 3 domains of the p47phox subunit of NADPH oxidase and similar domains; This family is composed of the tandem SH3 domains of p47phox subunit of NADPH oxidase and Nox Organizing protein 1 (NoxO1), the four SH3 domains of Tks4 (Tyr kinase substrate with four SH3 domains), the five SH3 domains of Tks5, the SH3 domain of obscurin, Myosin-I, and similar domains. Most members of this group also contain Phox homology (PX) domains, except for obscurin and Myosin-I. p47phox and NoxO1 are regulators of the phagocytic NADPH oxidase complex (also called Nox2 or gp91phox) and nonphagocytic NADPH oxidase Nox1, respectively. They play roles in the activation of their respective NADPH oxidase, which catalyzes the transfer of electrons from NADPH to molecular oxygen to form superoxide. Tks proteins are Src substrates and scaffolding proteins that play important roles in the formation of podosomes and invadopodia, the dynamic actin-rich structures that are related to cell migration and cancer cell invasion. Obscurin is a giant muscle protein that plays important roles in the organization and assembly of the myofibril and the sarcoplasmic reticulum. Type I myosins (Myosin-I) are actin-dependent motors in endocytic actin structures and actin patches. They play roles in membrane traffic in endocytic and secretory pathways, cell motility, and mechanosensing. Myosin-I contains an N-terminal actin-activated ATPase, a phospholipid-binding TH1 (tail homology 1) domain, and a C-terminal extension which includes an F-actin-binding TH2 domain, an SH3 domain, and an acidic peptide that participates in activating the Arp2/3complex. The SH3 domain of myosin-I is required for myosin-I-induced actin polymerization. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212790 [Multi-domain]  Cd Length: 53  Bit Score: 61.50  E-value: 5.39e-12
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1720379035  745 EALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFVR 794
Cdd:cd11856      3 VAIADYEAQGDDEISLQEGEVVEVLEKNDSGWWYVRKGDKEGWVPASYLE 52
SH3_GRAP2_C cd11950
C-terminal Src homology 3 domain of GRB2-related adaptor protein 2; GRAP2 is also called GADS ...
744-794 4.41e-11

C-terminal Src homology 3 domain of GRB2-related adaptor protein 2; GRAP2 is also called GADS (GRB2-related adapter downstream of Shc), GrpL, GRB2L, Mona, or GRID (Grb2-related protein with insert domain). It is expressed specifically in the hematopoietic system. It plays an important role in T cell receptor (TCR) signaling by promoting the formation of the SLP-76:LAT complex, which couples the TCR to the Ras pathway. It also has roles in antigen-receptor and tyrosine kinase mediated signaling. GRAP2 is unique from other GRB2-like adaptor proteins in that it can be regulated by caspase cleavage. It contains an N-terminal SH3 domain, a central SH2 domain, and a C-terminal SH3 domain. The C-terminal SH3 domain of GRAP2 binds to different motifs found in substrate peptides including the typical PxxP motif in hematopoietic progenitor kinase 1 (HPK1), the RxxK motif in SLP-76 and HPK1, and the RxxxxK motif in phosphatase-like protein HD-PTP. SH3 domains are protein interaction domains that typically bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212883 [Multi-domain]  Cd Length: 53  Bit Score: 59.07  E-value: 4.41e-11
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1720379035  744 AEALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFVR 794
Cdd:cd11950      2 VRALYDFEALEDDELGFNSGDVIEVLDSSNPSWWKGRLHGKLGLFPANYVA 52
SH3_STAM cd11820
Src homology 3 domain of Signal Transducing Adaptor Molecules; STAMs were discovered as ...
746-793 5.55e-11

Src homology 3 domain of Signal Transducing Adaptor Molecules; STAMs were discovered as proteins that are highly phosphorylated following cytokine and growth factor stimulation. They function in cytokine signaling and surface receptor degradation, as well as regulate Golgi morphology. They associate with many proteins including Jak2 and Jak3 tyrosine kinases, Hrs, AMSH, and UBPY. STAM adaptor proteins contain VHS (Vps27, Hrs, STAM homology), ubiquitin interacting (UIM), and SH3 domains. There are two vertebrate STAMs, STAM1 and STAM2, which may be functionally redundant; vertebrate STAMs contain ITAM motifs. They are part of the endosomal sorting complex required for transport (ESCRT-0). STAM2 deficiency in mice did not cause any obvious abnormality, while STAM1 deficiency resulted in growth retardation. Loss of both STAM1 and STAM2 in mice proved lethal, indicating that STAMs are important for embryonic development. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212754 [Multi-domain]  Cd Length: 54  Bit Score: 59.02  E-value: 5.55e-11
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*...
gi 1720379035  746 ALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFV 793
Cdd:cd11820      5 ALYDFEAAEDNELTFKAGEIITVLDDSDPNWWKGSNHRGEGLFPANFV 52
SH3_Stac_1 cd11833
First C-terminal Src homology 3 domain of SH3 and cysteine-rich domain-containing (Stac) ...
746-793 1.16e-10

First C-terminal Src homology 3 domain of SH3 and cysteine-rich domain-containing (Stac) proteins; Stac proteins are putative adaptor proteins that contain a cysteine-rich C1 domain and one or two SH3 domains at the C-terminus. There are three mammalian members (Stac1, Stac2, and Stac3) of this family. Stac1 and Stac3 contain two SH3 domains while Stac2 contains a single SH3 domain at the C-terminus. This model represents the first C-terminal SH3 domain of Stac1 and Stac3, and the single C-terminal SH3 domain of Stac2. Stac1 and Stac2 have been found to be expressed differently in mature dorsal root ganglia (DRG) neurons. Stac1 is mainly expressed in peptidergic neurons while Stac2 is found in a subset of nonpeptidergic and all trkB+ neurons. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212767 [Multi-domain]  Cd Length: 53  Bit Score: 57.90  E-value: 1.16e-10
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*...
gi 1720379035  746 ALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFV 793
Cdd:cd11833      4 ALYKFKPQENEDLEMRPGDKITLLDDSNEDWWKGKIEDRVGFFPANFV 51
ROM1 COG5422
RhoGEF, Guanine nucleotide exchange factor for Rho/Rac/Cdc42-like GTPases [Signal transduction ...
828-1079 1.42e-10

RhoGEF, Guanine nucleotide exchange factor for Rho/Rac/Cdc42-like GTPases [Signal transduction mechanisms];


Pssm-ID: 227709 [Multi-domain]  Cd Length: 1175  Bit Score: 66.07  E-value: 1.42e-10
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720379035  828 SQQQMRTNVIQEIMNTERVYIKHLKDICEGYIRQCRKHTGMFTVAQ---LATIFGNIEDIYKFQRKFLKDLEKQYNKEeP 904
Cdd:COG5422    480 KQEIKRQEAIYEVIYTERDFVKDLEYLRDTWIKPLEESNIIPENARrnfIKHVFANINEIYAVNSKLLKALTNRQCLS-P 558
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720379035  905 HLSEIGSCFLEHQEGFAIYSEYCNNHPGACVEL----SNLMKHSKYRHFFEACRLLQQMidiALDGFLLTPVQKICKYPL 980
Cdd:COG5422    559 IVNGIADIFLDYVPKFEPFIKYGASQPYAKYEFerekSVNPNFARFDHEVERLDESRKL---ELDGYLTKPTTRLARYPL 635
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720379035  981 QLAELLKYTTQEHGDYNNIKAAYEAMKNVACLINERKRKLE---SIDKIARWQVSIVGWEGLDILDRSSELIHSGELtki 1057
Cdd:COG5422    636 LLEEVLKFTDPDNPDTEDIPKVIDMLREFLSRLNFESGKAEnrgDLFHLNQQLLFKPEYVNLGLNDEYRKIIFKGVL--- 712
                          250       260
                   ....*....|....*....|....*....
gi 1720379035 1058 TRQGKSQQRI-------FFLFDHQLVSCK 1079
Cdd:COG5422    713 KRKAKSKTDGslrgdiqFFLLDNMLLFCK 741
PH_SOS cd01261
Son of Sevenless (SOS) Pleckstrin homology (PH) domain; SOS is a Ras guanine nucleotide ...
1045-1147 2.35e-10

Son of Sevenless (SOS) Pleckstrin homology (PH) domain; SOS is a Ras guanine nucleotide exchange factor. SOS is thought to transmit signals from activated receptor tyrosine kinases to the Ras signaling pathway. SOS contains a histone domain, Dbl-homology (DH), a PH domain, Rem domain, Cdc25 domain, and a Grb2 binding domain. The SOS PH domain binds to phosphatidylinositol-4,5-bisphosphate (PIP2) and phosphatidic acid (PA). SOS is dependent on Ras binding to the allosteric site via its histone domain for both a lower level of activity (Ras GDP) and maximal activity (Ras GTP). The DH domain blocks the allosteric Ras binding site in SOS. The PH domain is closely associated with the DH domain and the action of the DH-PH unit gates a reciprocal interaction between Ras and SOS. The C-terminal proline-rich domain of SOS binds to the adapter protein Grb2 which localizes the Sos protein to the plasma membrane and diminishes the negative effect of the C-terminal domain on the guanine nucleotide exchange activity of the CDC25-homology domain of SOS. PH domains have diverse functions, but in general are involved in targeting proteins to the appropriate cellular location or in the interaction with a binding partner. They share little sequence conservation, but all have a common fold, which is electrostatically polarized. Less than 10% of PH domains bind phosphoinositide phosphates (PIPs) with high affinity and specificity. PH domains are distinguished from other PIP-binding domains by their specific high-affinity binding to PIPs with two vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which results in targeting some PH domain proteins to the plasma membrane. A few display strong specificity in lipid binding. Any specificity is usually determined by loop regions or insertions in the N-terminus of the domain, which are not conserved across all PH domains. PH domains are found in cellular signaling proteins such as serine/threonine kinase, tyrosine kinases, regulators of G-proteins, endocytotic GTPases, adaptors, as well as cytoskeletal associated molecules and in lipid associated enzymes.


Pssm-ID: 269963  Cd Length: 109  Bit Score: 58.91  E-value: 2.35e-10
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720379035 1045 SSELIHSGELTKITRQGKSQQRIFFLFDHQLVSCKKDLLRR------DMLYYKGRMDMDEVELVDVEDGRDkdwslsLRN 1118
Cdd:cd01261      3 CNEFIMEGTLGKVGSGKRKTERHAFLFDGLLLLCKSNRRRTstggpkPEYRLKEKFFIRKVEINDLEDTEE------LKN 76
                           90       100
                   ....*....|....*....|....*....
gi 1720379035 1119 AFKLVSKATDEVHLFCaRKQEDKARWLQA 1147
Cdd:cd01261     77 AFEIVPRDQPSVILFA-KSAEEKNNWMAA 104
SH3_1 pfam00018
SH3 domain; SH3 (Src homology 3) domains are often indicative of a protein involved in signal ...
746-790 2.92e-10

SH3 domain; SH3 (Src homology 3) domains are often indicative of a protein involved in signal transduction related to cytoskeletal organization. First described in the Src cytoplasmic tyrosine kinase. The structure is a partly opened beta barrel.


Pssm-ID: 394975 [Multi-domain]  Cd Length: 47  Bit Score: 56.44  E-value: 2.92e-10
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*.
gi 1720379035  746 ALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRN-EDKEAWFPA 790
Cdd:pfam00018    2 ALYDYTAQEPDELSFKKGDIIIVLEKSEDGWWKGRNkGGKEGLIPS 47
SH3_GRB2_like_C cd11805
C-terminal Src homology 3 domain of Growth factor receptor-bound protein 2 (GRB2) and related ...
744-793 7.79e-10

C-terminal Src homology 3 domain of Growth factor receptor-bound protein 2 (GRB2) and related proteins; This family includes the adaptor protein GRB2 and related proteins including Drosophila melanogaster Downstream of receptor kinase (DRK), Caenorhabditis elegans Sex muscle abnormal protein 5 (Sem-5), GRB2-related adaptor protein (GRAP), GRAP2, and similar proteins. Family members contain an N-terminal SH3 domain, a central SH2 domain, and a C-terminal SH3 domain. GRB2/Sem-5/DRK is a critical signaling molecule that regulates the Ras pathway by linking tyrosine kinases to the Ras guanine nucleotide releasing protein Sos (son of sevenless), which converts Ras to the active GTP-bound state. GRAP2 plays an important role in T cell receptor (TCR) signaling by promoting the formation of the SLP-76:LAT complex, which couples the TCR to the Ras pathway. GRAP acts as a negative regulator of T cell receptor (TCR)-induced lymphocyte proliferation by downregulating the signaling to the Ras/ERK pathway. The C-terminal SH3 domains (SH3c) of GRB2 and GRAP2 have been shown to bind to classical PxxP motif ligands, as well as to non-classical motifs. GRB2 SH3c binds Gab2 (Grb2-associated binder 2) through epitopes containing RxxK motifs, while the SH3c of GRAP2 binds to the phosphatase-like protein HD-PTP via a RxxxxK motif. SH3 domains are protein interaction domains that typically bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212739 [Multi-domain]  Cd Length: 53  Bit Score: 55.71  E-value: 7.79e-10
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1720379035  744 AEALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFV 793
Cdd:cd11805      2 VQALYDFNPQEPGELEFRRGDIITVLDSSDPDWWKGELRGRVGIFPANYV 51
SH3_STAM2 cd11963
Src homology 3 domain of Signal Transducing Adaptor Molecule 2; STAM2, also called EAST ...
746-793 2.18e-09

Src homology 3 domain of Signal Transducing Adaptor Molecule 2; STAM2, also called EAST (Epidermal growth factor receptor-associated protein with SH3 and TAM domain) or Hbp (Hrs binding protein), is part of the endosomal sorting complex required for transport (ESCRT-0). It plays a role in sorting mono-ubiquinated endosomal cargo for trafficking to the lysosome for degradation. It is also involved in the regulation of exocytosis. STAMs were discovered as proteins that are highly phosphorylated following cytokine and growth factor stimulation. They function in cytokine signaling and surface receptor degradation, as well as regulate Golgi morphology. They associate with many proteins including Jak2 and Jak3 tyrosine kinases, Hrs, AMSH, and UBPY. STAM adaptor proteins contain VHS (Vps27, Hrs, STAM homology), ubiquitin interacting (UIM), and SH3 domains. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212896 [Multi-domain]  Cd Length: 57  Bit Score: 54.64  E-value: 2.18e-09
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*...
gi 1720379035  746 ALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFV 793
Cdd:cd11963      6 ALYDFEAVEDNELTFKHGEIIIVLDDSDANWWKGENHRGVGLFPSNFV 53
SH3_Ysc84p_like cd11842
Src homology 3 domain of Ysc84p and similar fungal proteins; This family is composed of the ...
744-795 4.88e-09

Src homology 3 domain of Ysc84p and similar fungal proteins; This family is composed of the Saccharomyces cerevisiae proteins, Ysc84p (also called LAS17-binding protein 4, Lsb4p) and Lsb3p, and similar fungal proteins. They contain an N-terminal SYLF domain (also called DUF500) and a C-terminal SH3 domain. Ysc84p localizes to actin patches and plays an important in actin polymerization during endocytosis. The N-terminal domain of both Ysc84p and Lsb3p can bind and bundle actin filaments. A study of the yeast SH3 domain interactome predicts that the SH3 domains of Lsb3p and Lsb4p may function as molecular hubs for the assembly of endocytic complexes. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212776 [Multi-domain]  Cd Length: 55  Bit Score: 53.58  E-value: 4.88e-09
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1720379035  744 AEALWDHVTMDDQELGFKAGDVIQVLEASNK--DWWWGRNEDKEAWFPASFVRL 795
Cdd:cd11842      2 AVALYDFAGEQPGDLAFQKGDIITILKKSDSqnDWWTGRIGGREGIFPANYVEL 55
SH3_PRMT2 cd11806
Src homology 3 domain of Protein arginine N-methyltransferase 2; PRMT2, also called HRMT1L1, ...
746-793 5.03e-09

Src homology 3 domain of Protein arginine N-methyltransferase 2; PRMT2, also called HRMT1L1, belongs to the arginine methyltransferase protein family. It functions as a coactivator to both estrogen receptor alpha (ER-alpha) and androgen receptor (AR), presumably through arginine methylation. The ER-alpha transcription factor is involved in cell proliferation, differentiation, morphogenesis, and apoptosis, and is also implicated in the development and progression of breast cancer. PRMT2 and its variants are upregulated in breast cancer cells and may be involved in modulating the ER-alpha signaling pathway during formation of breast cancer. PRMT2 also plays a role in regulating the function of E2F transcription factors, which are critical cell cycle regulators, by binding to the retinoblastoma gene product (RB). It contains an N-terminal SH3 domain and an AdoMet binding domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212740 [Multi-domain]  Cd Length: 53  Bit Score: 53.16  E-value: 5.03e-09
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*...
gi 1720379035  746 ALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFV 793
Cdd:cd11806      4 AIADFVATDDSQLSFESGDKLLVLRKPSVDWWWAEHNGCCGYIPASHL 51
SH3_STAM1 cd11964
Src homology 3 domain of Signal Transducing Adaptor Molecule 1; STAM1 is part of the endosomal ...
746-793 5.91e-09

Src homology 3 domain of Signal Transducing Adaptor Molecule 1; STAM1 is part of the endosomal sorting complex required for transport (ESCRT-0) and is involved in sorting ubiquitinated cargo proteins from the endosome. It may also be involved in the regulation of IL2 and GM-CSF mediated signaling, and has been implicated in neural cell survival. STAMs were discovered as proteins that are highly phosphorylated following cytokine and growth factor stimulation. They function in cytokine signaling and surface receptor degradation, as well as regulate Golgi morphology. They associate with many proteins including Jak2 and Jak3 tyrosine kinases, Hrs, AMSH, and UBPY. STAM adaptor proteins contain VHS (Vps27, Hrs, STAM homology), ubiquitin interacting (UIM), and SH3 domains. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212897 [Multi-domain]  Cd Length: 55  Bit Score: 53.03  E-value: 5.91e-09
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*...
gi 1720379035  746 ALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFV 793
Cdd:cd11964      5 AIYDFEAAEDNELTFKAGDIITILDDSDPNWWKGETPQGTGLFPSNFV 52
PH_PLEKHG1_G2_G3 cd13243
Pleckstrin homology domain-containing family G members 1, 2, and 3 pleckstrin homology (PH) ...
999-1146 1.22e-08

Pleckstrin homology domain-containing family G members 1, 2, and 3 pleckstrin homology (PH) domain; PLEKHG1 (also called ARHGEF41), PLEKHG2 (also called ARHGEF42 or CLG/common-site lymphoma/leukemia guanine nucleotide exchange factor2), and PLEKHG3 (also called ARHGEF43) have RhoGEF DH/double-homology domains in tandem with a PH domain which is involved in phospholipid binding. They function as a guanine nucleotide exchange factor (GEF) and are involved in the regulation of Rho protein signal transduction. Mutations in PLEKHG1 have been associated panic disorder (PD), an anxiety disorder characterized by panic attacks and anticipatory anxiety. PH domains have diverse functions, but in general are involved in targeting proteins to the appropriate cellular location or in the interaction with a binding partner. They share little sequence conservation, but all have a common fold, which is electrostatically polarized. Less than 10% of PH domains bind phosphoinositide phosphates (PIPs) with high affinity and specificity. PH domains are distinguished from other PIP-binding domains by their specific high-affinity binding to PIPs with two vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which results in targeting some PH domain proteins to the plasma membrane. A few display strong specificity in lipid binding. Any specificity is usually determined by loop regions or insertions in the N-terminus of the domain, which are not conserved across all PH domains. PH domains are found in cellular signaling proteins such as serine/threonine kinase, tyrosine kinases, regulators of G-proteins, endocytotic GTPases, adaptors, as well as cytoskeletal associated molecules and in lipid associated enzymes.


Pssm-ID: 270063 [Multi-domain]  Cd Length: 147  Bit Score: 55.05  E-value: 1.22e-08
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720379035  999 IKAAYEAMKNVACLINERKRKLESIDKIARWQVSIVGWEGLDILDRSSELIHSGeltkITRQGKSQQRIFFLFDHQLVSC 1078
Cdd:cd13243      4 VEEALDTMTQVAWHINDMKRKHEHAVRVQEIQSLLDGWEGPELTTYGDLVLEGT----FRMAGAKNERLLFLFDKMLLIT 79
                           90       100       110       120       130       140       150
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|...
gi 1720379035 1079 KKdllRRDMLY-YKGRMDMDEVELVDVEDGRDkdwslslrNAFKLV----SKATdevHLFCARKQEDKARWLQ 1146
Cdd:cd13243     80 KK---REDGILqYKTHIMCSNLMLSESIPKEP--------LSFQVLpfdnPKLQ---YTLQAKNQEQKRLWTQ 138
SH3_Intersectin_2 cd11837
Second Src homology 3 domain (or SH3B) of Intersectin; Intersectins (ITSNs) are adaptor ...
755-795 1.23e-08

Second Src homology 3 domain (or SH3B) of Intersectin; Intersectins (ITSNs) are adaptor proteins that function in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. They are essential for initiating clathrin-coated pit formation. They bind to many proteins through their multidomain structure and facilitate the assembly of multimeric complexes. Vertebrates contain two ITSN proteins, ITSN1 and ITSN2, which exist in alternatively spliced short and long isoforms. The short isoforms contain two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoforms, in addition, contain RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. ITSN1 and ITSN2 are both widely expressed, with variations depending on tissue type and stage of development. The second SH3 domain (or SH3B) of ITSN1 has been shown to bind WNK and CdGAP. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212771 [Multi-domain]  Cd Length: 53  Bit Score: 52.37  E-value: 1.23e-08
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|..
gi 1720379035  755 DQELGFKAGDVIQVLEaSNKDWWWGRNED-KEAWFPASFVRL 795
Cdd:cd11837     13 ENHLSFAKGDIITVLE-QQEMWWFGELEGgEEGWFPKSYVKE 53
SH3_ASPP1 cd11954
Src Homology 3 domain of Apoptosis Stimulating of p53 protein 1; ASPP1, like ASPP2, activates ...
746-795 1.26e-08

Src Homology 3 domain of Apoptosis Stimulating of p53 protein 1; ASPP1, like ASPP2, activates the apoptotic function of the p53 family of tumor suppressors (p53, p63, and p73). In addition, it functions in the cytoplasm to regulate the nuclear localization of the transcriptional cofactors YAP and TAZ by inihibiting their phosphorylation; YAP and TAZ are important regulators of cell expansion, differentiation, migration, and invasion. ASPP1 is downregulated in breast tumors expressing wild-type p53. It contains a proline-rich region, four ankyrin (ANK) repeats, and an SH3 domain at its C-terminal half. The SH3 domain and the ANK repeats of ASPP1 contribute to the p53 binding site; they bind to the DNA binding domain of p53. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212887 [Multi-domain]  Cd Length: 57  Bit Score: 52.33  E-value: 1.26e-08
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1720379035  746 ALWDHVTMDDQELGFKAGDVIQVL---EASNKDWWWGRNEDKEAWFPASFVRL 795
Cdd:cd11954      5 ALWDYEAQNADELSFQEGDAITILrrkDDSETEWWWARLNDKEGYVPKNLLGL 57
SH3_9 pfam14604
Variant SH3 domain;
746-794 1.52e-08

Variant SH3 domain;


Pssm-ID: 434066 [Multi-domain]  Cd Length: 49  Bit Score: 51.85  E-value: 1.52e-08
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1720379035  746 ALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFVR 794
Cdd:pfam14604    1 ALYPYEPKDDDELSLQRGDVITVIEESEDGWWEGINTGRTGLVPANYVE 49
SH3_Eve1_4 cd11817
Fourth Src homology 3 domain of ADAM-binding protein Eve-1; Eve-1, also called SH3 ...
744-792 1.68e-08

Fourth Src homology 3 domain of ADAM-binding protein Eve-1; Eve-1, also called SH3 domain-containing protein 19 (SH3D19) or EEN-binding protein (EBP), exists in multiple alternatively spliced isoforms. The longest isoform contains five SH3 domain in the C-terminal region and seven proline-rich motifs in the N-terminal region. It is abundantly expressed in skeletal muscle and heart, and may be involved in regulating the activity of ADAMs (A disintegrin and metalloproteases). Eve-1 interacts with EEN, an endophilin involved in endocytosis and may be the target of the MLL-EEN fusion protein that is implicated in leukemogenesis. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212751 [Multi-domain]  Cd Length: 50  Bit Score: 51.71  E-value: 1.68e-08
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1720379035  744 AEALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASF 792
Cdd:cd11817      2 AVALYDFTGETEEDLSFQRGDRILVTEHLDAEWSRGRLNGREGIFPRAF 50
SH3_ASPP2 cd11953
Src Homology 3 (SH3) domain of Apoptosis Stimulating of p53 protein 2; ASPP2 is the full ...
746-795 1.77e-08

Src Homology 3 (SH3) domain of Apoptosis Stimulating of p53 protein 2; ASPP2 is the full length form of the previously-identified tumor supressor, p53-binding protein 2 (p53BP2). ASPP2 activates the apoptotic function of the p53 family of tumor suppressors (p53, p63, and p73). It plays a central role in regulating apoptosis and cell growth; ASPP2-deficient mice show postnatal death. Downregulated expression of ASPP2 is frequently found in breast tumors, lung cancer, and diffuse large B-cell lymphoma where it is correlated with a poor clinical outcome. ASPP2 contains a proline-rich region, four ankyrin (ANK) repeats, and an SH3 domain at its C-terminal half. The SH3 domain and the ANK repeats of ASPP2 contribute to the p53 binding site; they bind to the DNA binding domain of p53. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212886 [Multi-domain]  Cd Length: 57  Bit Score: 51.88  E-value: 1.77e-08
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1720379035  746 ALWDHVTMDDQELGFKAGDVIQVLEASNKD---WWWGRNEDKEAWFPASFVRL 795
Cdd:cd11953      5 ALWDYEGESDDELSFKEGDCMTILRREDEDeteWWWARLNDKEGYVPRNLLGL 57
SH3_Abp1_eu cd11960
Src homology 3 domain of eumetazoan Actin-binding protein 1; Abp1, also called drebrin-like ...
743-795 2.02e-08

Src homology 3 domain of eumetazoan Actin-binding protein 1; Abp1, also called drebrin-like protein, is an adaptor protein that functions in receptor-mediated endocytosis and vesicle trafficking. It contains an N-terminal actin-binding module, the actin-depolymerizing factor (ADF) homology domain, a helical domain, and a C-terminal SH3 domain. Mammalian Abp1, unlike yeast Abp1, does not contain an acidic domain that interacts with the Arp2/3 complex. It regulates actin dynamics indirectly by interacting with dynamin and WASP family proteins. Abp1 deficiency causes abnormal organ structure and function of the spleen, heart, and lung of mice. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212893 [Multi-domain]  Cd Length: 54  Bit Score: 51.63  E-value: 2.02e-08
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1720379035  743 CAEALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNED-KEAWFPASFVRL 795
Cdd:cd11960      1 RARALYDYQAADDTEISFDPGDIITDIEQIDEGWWRGTGPDgTYGLFPANYVEL 54
SH3_Stac2_C cd11985
C-terminal Src homology 3 domain of SH3 and cysteine-rich domain-containing protein 2 (Stac2); ...
743-794 2.72e-08

C-terminal Src homology 3 domain of SH3 and cysteine-rich domain-containing protein 2 (Stac2); Stac proteins are putative adaptor proteins that contain a cysteine-rich C1 domain and one or two SH3 domains at the C-terminus. There are three mammalian members (Stac1, Stac2, and Stac3) of this family. Stac2 contains a single SH3 domain at the C-terminus unlike Stac1 and Stac3, which contain two C-terminal SH3 domains. Stac1 and Stac2 have been found to be expressed differently in mature dorsal root ganglia (DRG) neurons. Stac1 is mainly expressed in peptidergic neurons while Stac2 is found in a subset of nonpeptidergic and all trkB+ neurons. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212918  Cd Length: 53  Bit Score: 51.10  E-value: 2.72e-08
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1720379035  743 CAEALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFVR 794
Cdd:cd11985      1 SYVALYKFLPQENNDLPLQPGDRVMVVDDSNEDWWKGKSGDRVGFFPANFVQ 52
PH cd00821
Pleckstrin homology (PH) domain; PH domains have diverse functions, but in general are ...
1050-1147 3.62e-08

Pleckstrin homology (PH) domain; PH domains have diverse functions, but in general are involved in targeting proteins to the appropriate cellular location or in the interaction with a binding partner. They share little sequence conservation, but all have a common fold, which is electrostatically polarized. Less than 10% of PH domains bind phosphoinositide phosphates (PIPs) with high affinity and specificity. PH domains are distinguished from other PIP-binding domains by their specific high-affinity binding to PIPs with two vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which results in targeting some PH domain proteins to the plasma membrane. A few display strong specificity in lipid binding. Any specificity is usually determined by loop regions or insertions in the N-terminus of the domain, which are not conserved across all PH domains. PH domains are found in cellular signaling proteins such as serine/threonine kinase, tyrosine kinases, regulators of G-proteins, endocytotic GTPases, adaptors, as well as cytoskeletal associated molecules and in lipid associated enzymes.


Pssm-ID: 275388 [Multi-domain]  Cd Length: 92  Bit Score: 52.16  E-value: 3.62e-08
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gi 1720379035 1050 HSGELTKITRQGKS--QQRIFFLFDHQLVSCKKDllRRDMLYYKGRMDMDEVelVDVEDGRDKDWslslRNAFKLVSKaT 1127
Cdd:cd00821      1 KEGYLLKRGGGGLKswKKRWFVLFEGVLLYYKSK--KDSSYKPKGSIPLSGI--LEVEEVSPKER----PHCFELVTP-D 71
                           90       100
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gi 1720379035 1128 DEVHLFCARKQEDKARWLQA 1147
Cdd:cd00821     72 GRTYYLQADSEEERQEWLKA 91
PH pfam00169
PH domain; PH stands for pleckstrin homology.
1048-1147 5.45e-08

PH domain; PH stands for pleckstrin homology.


Pssm-ID: 459697 [Multi-domain]  Cd Length: 105  Bit Score: 52.18  E-value: 5.45e-08
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gi 1720379035 1048 LIHSGELTKITRQGKS--QQRIFFLFDHQLVSCKKDLLRRDmLYYKGRMDMDEVELVDVEDGRDKDwslsLRNAFKLVSK 1125
Cdd:pfam00169    1 VVKEGWLLKKGGGKKKswKKRYFVLFDGSLLYYKDDKSGKS-KEPKGSISLSGCEVVEVVASDSPK----RKFCFELRTG 75
                           90       100
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gi 1720379035 1126 ATD--EVHLFCARKQEDKARWLQA 1147
Cdd:pfam00169   76 ERTgkRTYLLQAESEEERKDWIKA 99
SH3_p40phox cd11869
Src Homology 3 domain of the p40phox subunit of NADPH oxidase; p40phox, also called Neutrophil ...
744-795 5.95e-08

Src Homology 3 domain of the p40phox subunit of NADPH oxidase; p40phox, also called Neutrophil cytosol factor 4 (NCF-4), is a cytosolic subunit of the phagocytic NADPH oxidase complex (also called Nox2 or gp91phox) which plays a crucial role in the cellular response to bacterial infection. NADPH oxidase catalyzes the transfer of electrons from NADPH to oxygen during phagocytosis forming superoxide and reactive oxygen species. p40phox positively regulates NADPH oxidase in both phosphatidylinositol-3-phosphate (PI3P)-dependent and PI3P-independent manner. It contains an N-terminal PX domain, a central SH3 domain, and a C-terminal PB1 domain that interacts with p67phox. The SH3 domain of p40phox binds to canonical polyproline and noncanonical motifs at the C-terminus of p47phox. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212802  Cd Length: 54  Bit Score: 50.18  E-value: 5.95e-08
                           10        20        30        40        50
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gi 1720379035  744 AEALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFVRL 795
Cdd:cd11869      2 AEALFDFTGNSKLELNFKAGDVIFLLSRVNKDWLEGTVRGATGIFPLSFVKI 53
SH3_Src_like cd11845
Src homology 3 domain of Src kinase-like Protein Tyrosine Kinases; Src subfamily members ...
746-792 6.36e-08

Src homology 3 domain of Src kinase-like Protein Tyrosine Kinases; Src subfamily members include Src, Lck, Hck, Blk, Lyn, Fgr, Fyn, Yrk, Yes, and Brk. Src (or c-Src) proteins are cytoplasmic (or non-receptor) PTKs which are anchored to the plasma membrane. They contain an N-terminal SH4 domain with a myristoylation site, followed by SH3 and SH2 domains, a tyr kinase domain, and a regulatory C-terminal region containing a conserved tyr. They are activated by autophosphorylation at the tyr kinase domain, but are negatively regulated by phosphorylation at the C-terminal tyr by Csk (C-terminal Src Kinase). However, Brk lacks the N-terminal myristoylation sites. Src proteins are involved in signaling pathways that regulate cytokine and growth factor responses, cytoskeleton dynamics, cell proliferation, survival, and differentiation. They were identified as the first proto-oncogene products, and they regulate cell adhesion, invasion, and motility in cancer cells, and tumor vasculature, contributing to cancer progression and metastasis. Src kinases are overexpressed in a variety of human cancers, making them attractive targets for therapy. They are also implicated in acute inflammatory responses and osteoclast function. Src, Fyn, Yes, and Yrk are widely expressed, while Blk, Lck, Hck, Fgr, Lyn, and Brk show a limited expression pattern. This subfamily also includes Drosophila Src42A, Src oncogene at 42A (also known as Dsrc41) which accumulates at sites of cell-cell or cell-matrix adhesion, and participates in Drosphila development and wound healing. It has been shown to promote tube elongation in the tracheal system, is essential for proper cell-cell matching during dorsal closure, and regulates cell-cell contacts in developing Drosophila eyes. The SH3 domain of Src kinases contributes to substrate recruitment by binding adaptor proteins/substrates, and regulation of kinase activity through an intramolecular interaction. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212779 [Multi-domain]  Cd Length: 52  Bit Score: 50.27  E-value: 6.36e-08
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gi 1720379035  746 ALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNED--KEAWFPASF 792
Cdd:cd11845      4 ALYDYEARTDDDLSFKKGDRLQILDDSDGDWWLARHLStgKEGYIPSNY 52
SH3_MyoIe_If_like cd11827
Src homology 3 domain of Myosins Ie, If, and similar proteins; Myosins Ie (MyoIe) and If ...
746-793 6.37e-08

Src homology 3 domain of Myosins Ie, If, and similar proteins; Myosins Ie (MyoIe) and If (MyoIf) are nonmuscle, unconventional, long tailed, class I myosins containing an N-terminal motor domain and a myosin tail with TH1, TH2, and SH3 domains. MyoIe interacts with the endocytic proteins, dynamin and synaptojanin-1, through its SH3 domain; it may play a role in clathrin-dependent endocytosis. In the kidney, MyoIe is critical for podocyte function and normal glomerular filtration. Mutations in MyoIe is associated with focal segmental glomerulosclerosis, a disease characterized by massive proteinuria and progression to end-stage kidney disease. MyoIf is predominantly expressed in the immune system; it plays a role in immune cell motility and innate immunity. Mutations in MyoIf may be associated with the loss of hearing. The MyoIf gene has also been found to be fused to the MLL (Mixed lineage leukemia) gene in infant acute myeloid leukemias (AML). SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212761 [Multi-domain]  Cd Length: 53  Bit Score: 50.11  E-value: 6.37e-08
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gi 1720379035  746 ALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFV 793
Cdd:cd11827      4 ALYAYDAQDTDELSFNEGDIIEILKEDPSGWWTGRLRGKEGLFPGNYV 51
SH3_HS1 cd12073
Src homology 3 domain of Hematopoietic lineage cell-specific protein 1; HS1, also called HCLS1 ...
742-795 7.56e-08

Src homology 3 domain of Hematopoietic lineage cell-specific protein 1; HS1, also called HCLS1 (hematopoietic cell-specific Lyn substrate 1), is a cortactin homolog expressed specifically in hematopoietic cells. It is an actin regulatory protein that binds the Arp2/3 complex and stabilizes branched actin filaments. It is required for cell spreading and signaling in lymphocytes. It regulates cytoskeletal remodeling that controls lymphocyte trafficking, and it also affects tissue invasion and infiltration of leukemic B cells. Like cortactin, HS1 contains an N-terminal acidic domain, several copies of a repeat domain found in cortactin and HS1, a proline-rich region, and a C-terminal SH3 domain. The N-terminal region binds the Arp2/3 complex and F-actin, while the C-terminal region acts as an adaptor or scaffold that can connect varied proteins that bind the SH3 domain within the actin network. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 213006 [Multi-domain]  Cd Length: 55  Bit Score: 50.22  E-value: 7.56e-08
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gi 1720379035  742 VCAEALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFVRL 795
Cdd:cd12073      1 ICAVALYDYQGEGDDEISFDPQETITDIEMVDEGWWKGTCHGHRGLFPANYVEL 54
SH3_SGSM3 cd11813
Src Homology 3 domain of Small G protein Signaling Modulator 3; SGSM3 is also called ...
744-795 8.47e-08

Src Homology 3 domain of Small G protein Signaling Modulator 3; SGSM3 is also called Merlin-associated protein (MAP), RUN and SH3 domain-containing protein (RUSC3), RUN and TBC1 domain-containing protein 3 (RUTBC3), Rab GTPase-activating protein 5 (RabGAP5), or Rab GAP-like protein (RabGAPLP). It is expressed ubiquitously and functions as a regulator of small G protein RAP- and RAB-mediated neuronal signaling. It is involved in modulating NGF-mediated neurite outgrowth and differentiation. It also interacts with the tumor suppressor merlin and may play a role in the merlin-associated suppression of cell growth. SGSM3 contains TBC, SH3, and RUN domains. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212747  Cd Length: 53  Bit Score: 49.80  E-value: 8.47e-08
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gi 1720379035  744 AEALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFVRL 795
Cdd:cd11813      2 AKALLDFERHDDDELGFRKNDIITIISQKDEHCWVGELNGLRGWFPAKFVEL 53
SH3_ASPP cd11807
Src homology 3 domain of Apoptosis Stimulating of p53 proteins (ASPP); The ASPP family of ...
746-789 1.19e-07

Src homology 3 domain of Apoptosis Stimulating of p53 proteins (ASPP); The ASPP family of proteins bind to important regulators of apoptosis (p53, Bcl-2, and RelA) and cell growth (APCL, PP1). They share similarity at their C-termini, where they harbor a proline-rich region, four ankyrin (ANK) repeats, and an SH3 domain. Vertebrates contain three members of the family: ASPP1, ASPP2, and iASPP. ASPP1 and ASPP2 activate the apoptotic function of the p53 family of tumor suppressors (p53, p63, and p73), while iASPP is an oncoprotein that specifically inhibits p53-induced apoptosis. The expression of ASPP proteins is altered in tumors; ASPP1 and ASPP2 are downregulated whereas iASPP is upregulated is some cancer types. ASPP proteins also bind and regulate protein phosphatase 1 (PP1), and this binding is competitive with p53 binding. The SH3 domain and the ANK repeats of ASPP contribute to the p53 binding site; they bind to the DNA binding domain of p53. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212741 [Multi-domain]  Cd Length: 57  Bit Score: 49.68  E-value: 1.19e-07
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gi 1720379035  746 ALWDHVTMDDQELGFKAGDVIQVL---EASNKDWWWGRNEDKEAWFP 789
Cdd:cd11807      5 ALFDYEAENGDELSFREGDELTVLrkgDDDETEWWWARLNDKEGYVP 51
SH3_Alpha_Spectrin cd11808
Src homology 3 domain of Alpha Spectrin; Spectrin is a major structural component of the red ...
743-794 1.42e-07

Src homology 3 domain of Alpha Spectrin; Spectrin is a major structural component of the red blood cell membrane skeleton and is important in erythropoiesis and membrane biogenesis. It is a flexible, rope-like molecule composed of two subunits, alpha and beta, which consist of many spectrin-type repeats. Alpha and beta spectrin associate to form heterodimers and tetramers; spectrin tetramer formation is critical for red cell shape and deformability. Defects in alpha spectrin have been associated with inherited hemolytic anemias including hereditary spherocytosis (HSp), hereditary elliptocytosis (HE), and hereditary pyropoikilocytosis (HPP). Alpha spectrin contains a middle SH3 domain and a C-terminal EF-hand binding motif in addition to multiple spectrin repeats. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212742 [Multi-domain]  Cd Length: 53  Bit Score: 49.02  E-value: 1.42e-07
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gi 1720379035  743 CAEALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFVR 794
Cdd:cd11808      1 CVVALYDYQEKSPREVSMKKGDILTLLNSSNKDWWKVEVNDRQGFVPAAYVK 52
SH3_Intersectin2_2 cd11990
Second Src homology 3 domain (or SH3B) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor ...
744-795 2.04e-07

Second Src homology 3 domain (or SH3B) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN2 also functions as a specific GEF for Cdc42 activation in epithelial morphogenesis, and is required in mitotic spindle orientation. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The second SH3 domain (or SH3B) of ITSN2 is expected to bind protein partners, similar to ITSN1 which has been shown to bind WNK and CdGAP. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212923 [Multi-domain]  Cd Length: 52  Bit Score: 48.88  E-value: 2.04e-07
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gi 1720379035  744 AEALWDHVTMDDQELGFKAGDVIQVLEaSNKDWWWGRNEDKEAWFPASFVRL 795
Cdd:cd11990      2 AQALCSWTAKKDNHLNFSKNDIITVLE-QQENWWFGEVHGGRGWFPKSYVKL 52
SH3_GRB2_C cd11949
C-terminal Src homology 3 domain of Growth factor receptor-bound protein 2; GRB2 is a critical ...
744-794 2.36e-07

C-terminal Src homology 3 domain of Growth factor receptor-bound protein 2; GRB2 is a critical signaling molecule that regulates the Ras pathway by linking tyrosine kinases to the Ras guanine nucleotide releasing protein Sos (son of sevenless), which converts Ras to the active GTP-bound state. It is ubiquitously expressed in all tissues throughout development and is important in cell cycle progression, motility, morphogenesis, and angiogenesis. In lymphocytes, GRB2 is associated with antigen receptor signaling components. GRB2 contains an N-terminal SH3 domain, a central SH2 domain, and a C-terminal SH3 domain. The C-terminal SH3 domain of GRB2 binds to Gab2 (Grb2-associated binder 2) through epitopes containing RxxK motifs, as well as to the proline-rich C-terminus of FGRF2. SH3 domains are protein interaction domains that typically bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212882 [Multi-domain]  Cd Length: 53  Bit Score: 48.68  E-value: 2.36e-07
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gi 1720379035  744 AEALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFVR 794
Cdd:cd11949      2 VQALFDFDPQEDGELGFRRGDFIEVMDNSDPNWWKGACHGQTGMFPRNYVT 52
SH3_GAS7 cd11829
Src homology 3 domain of Growth Arrest Specific protein 7; GAS7 is mainly expressed in the ...
756-793 2.50e-07

Src homology 3 domain of Growth Arrest Specific protein 7; GAS7 is mainly expressed in the brain and is required for neurite outgrowth. It may also play a role in the protection and migration of embryonic stem cells. Treatment-related acute myeloid leukemia (AML) has been reported resulting from mixed-lineage leukemia (MLL)-GAS7 translocations as a complication of primary cancer treatment. GAS7 contains an N-terminal SH3 domain, followed by a WW domain, and a central F-BAR domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212763 [Multi-domain]  Cd Length: 52  Bit Score: 48.66  E-value: 2.50e-07
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gi 1720379035  756 QELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFV 793
Cdd:cd11829     15 QGLSFEAGELIRVLQAPDGGWWEGEKDGLRGWFPASYV 52
SH3_Abp1_fungi_C2 cd11961
Second C-terminal Src homology 3 domain of Fungal Actin-binding protein 1; Abp1 is an adaptor ...
744-795 2.95e-07

Second C-terminal Src homology 3 domain of Fungal Actin-binding protein 1; Abp1 is an adaptor protein that functions in receptor-mediated endocytosis and vesicle trafficking. It contains an N-terminal actin-binding module, the actin-depolymerizing factor (ADF) homology domain, a central proline-rich region, and a C-terminal SH3 domain (many yeast Abp1 proteins contain two C-terminal SH3 domains). Yeast Abp1 also contains two acidic domains that bind directly to the Arp2/3 complex, which is required to initiate actin polymerization. The SH3 domain of yeast Abp1 binds and localizes the kinases, Ark1p and Prk1p, which facilitate actin patch disassembly following vesicle internalization. It also mediates the localization to the actin patch of the synaptojanin-like protein, Sjl2p, which plays a key role in endocytosis. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212894 [Multi-domain]  Cd Length: 53  Bit Score: 48.29  E-value: 2.95e-07
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gi 1720379035  744 AEALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFVRL 795
Cdd:cd11961      2 AKALYDYDAAEDNELSFFENDKIINIEFVDDDWWLGECHGSRGLFPSNYVEL 53
SH3_PIX cd11877
Src Homology 3 domain of Pak Interactive eXchange factors; PIX proteins are Rho guanine ...
744-795 4.67e-07

Src Homology 3 domain of Pak Interactive eXchange factors; PIX proteins are Rho guanine nucleotide exchange factors (GEFs), which activate small GTPases by exchanging bound GDP for free GTP. They act as GEFs for both Cdc42 and Rac 1, and have been implicated in cell motility, adhesion, neurite outgrowth, and cell polarity. Vertebrates contain two proteins from the PIX subfamily, alpha-PIX and beta-PIX. Alpha-PIX, also called ARHGEF6, is localized in dendritic spines where it regulates spine morphogenesis. Mutations in the ARHGEF6 gene cause X-linked intellectual disability in humans. Beta-PIX play roles in regulating neuroendocrine exocytosis, focal adhesion maturation, cell migration, synaptic vesicle localization, and insulin secretion. PIX proteins contain an N-terminal SH3 domain followed by RhoGEF (also called Dbl-homologous or DH) and Pleckstrin Homology (PH) domains, and a C-terminal leucine-zipper domain for dimerization. The SH3 domain of PIX binds to an atypical PxxxPR motif in p21-activated kinases (PAKs) with high affinity. The binding of PAKs to PIX facilitate the localization of PAKs to focal complexes and also localizes PAKs to PIX targets Cdc43 and Rac, leading to the activation of PAKs. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212810 [Multi-domain]  Cd Length: 53  Bit Score: 47.69  E-value: 4.67e-07
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gi 1720379035  744 AEALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFVRL 795
Cdd:cd11877      2 VRAKFNFEGTNEDELSFDKGDIITVTQVVEGGWWEGTLNGKTGWFPSNYVKE 53
SH3_GRAP_C cd11951
C-terminal Src homology 3 domain of GRB2-related adaptor protein; GRAP is a GRB-2 like adaptor ...
744-793 5.92e-07

C-terminal Src homology 3 domain of GRB2-related adaptor protein; GRAP is a GRB-2 like adaptor protein that is highly expressed in lymphoid tissues. It acts as a negative regulator of T cell receptor (TCR)-induced lymphocyte proliferation by downregulating the signaling to the Ras/ERK pathway. It has been identified as a regulator of TGFbeta signaling in diabetic kidney tubules and may have a role in the pathogenesis of the disease. GRAP contains an N-terminal SH3 domain, a central SH2 domain, and a C-terminal SH3 domain. The C-terminal SH3 domains (SH3c) of the related proteins, GRB2 and GRAP2, have been shown to bind to classical PxxP motif ligands, as well as to non-classical motifs. GRB2 SH3c binds Gab2 (Grb2-associated binder 2) through epitopes containing RxxK motifs, while the SH3c of GRAP2 binds to the phosphatase-like protein HD-PTP via a RxxxxK motif. SH3 domains are protein interaction domains that typically bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212884  Cd Length: 53  Bit Score: 47.49  E-value: 5.92e-07
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gi 1720379035  744 AEALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFV 793
Cdd:cd11951      2 VQAQYDFSAEDPSQLSFRRGDIIEVLDCPDPNWWRGRISGRVGFFPRNYV 51
SH3_p67phox_C cd12046
C-terminal (or second) Src Homology 3 domain of the p67phox subunit of NADPH oxidase; p67phox, ...
745-794 7.42e-07

C-terminal (or second) Src Homology 3 domain of the p67phox subunit of NADPH oxidase; p67phox, also called Neutrophil cytosol factor 2 (NCF-2), is a cytosolic subunit of the phagocytic NADPH oxidase complex (also called Nox2 or gp91phox) which plays a crucial role in the cellular response to bacterial infection. NADPH oxidase catalyzes the transfer of electrons from NADPH to oxygen during phagocytosis forming superoxide and reactive oxygen species. p67phox plays a regulatory role and contains N-terminal TPR, first SH3 (or N-terminal or central SH3), PB1, and C-terminal SH3 domains. It binds, via its C-terminal SH3 domain, to a proline-rich region of p47phox and upon activation, this complex assembles with flavocytochrome b558, the Nox2-p22phox heterodimer. Concurrently, RacGTP translocates to the membrane and interacts with the TPR domain of p67phox, which leads to the activation of NADPH oxidase. The PB1 domain of p67phox binds to its partner PB1 domain in p40phox, and this facilitates the assembly of p47phox-p67phox at the membrane. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212979 [Multi-domain]  Cd Length: 53  Bit Score: 47.10  E-value: 7.42e-07
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gi 1720379035  745 EALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFVR 794
Cdd:cd12046      3 VALFSYEASQPEDLEFQKGDVILVLSKVNEDWLEGQCKGKIGIFPSAFVE 52
SH3_OSTF1 cd11772
Src Homology 3 domain of metazoan osteoclast stimulating factor 1; OSTF1, also named OSF or ...
746-793 9.18e-07

Src Homology 3 domain of metazoan osteoclast stimulating factor 1; OSTF1, also named OSF or SH3P2, is a signaling protein containing SH3 and ankyrin-repeat domains. It acts through a Src-related pathway to enhance the formation of osteoclasts and bone resorption. It also acts as a negative regulator of cell motility. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212706 [Multi-domain]  Cd Length: 53  Bit Score: 46.91  E-value: 9.18e-07
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gi 1720379035  746 ALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFV 793
Cdd:cd11772      4 ALYDYEAQHPDELSFEEGDLLYISDKSDPNWWKATCGGKTGLIPSNYV 51
SH3_Cortactin_like cd11819
Src homology 3 domain of Cortactin and related proteins; This subfamily includes cortactin, ...
743-795 9.24e-07

Src homology 3 domain of Cortactin and related proteins; This subfamily includes cortactin, Abp1 (actin-binding protein 1), hematopoietic lineage cell-specific protein 1 (HS1), and similar proteins. These proteins are involved in regulating actin dynamics through direct or indirect interaction with the Arp2/3 complex, which is required to initiate actin polymerization. They all contain at least one C-terminal SH3 domain. Cortactin and HS1 bind Arp2/3 and actin through an N-terminal region that contains an acidic domain and several copies of a repeat domain found in cortactin and HS1. Abp1 binds actin via an N-terminal actin-depolymerizing factor (ADF) homology domain. Yeast Abp1 binds Arp2/3 directly through two acidic domains. Mammalian Abp1 does not directly interact with Arp2/3; instead, it regulates actin dynamics indirectly by interacting with dynamin and WASP family proteins. The C-terminal region of these proteins acts as an adaptor or scaffold that can connect membrane trafficking and signaling proteins that bind the SH3 domain within the actin network. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212753 [Multi-domain]  Cd Length: 54  Bit Score: 46.92  E-value: 9.24e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1720379035  743 CAEALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNED-KEAWFPASFVRL 795
Cdd:cd11819      1 RAKALYDYQAAEDNEISFVEGDIITQIEQIDEGWWLGVNAKgQKGLFPANYVEL 54
SH3_2 pfam07653
Variant SH3 domain; SH3 (Src homology 3) domains are often indicative of a protein involved in ...
746-795 9.54e-07

Variant SH3 domain; SH3 (Src homology 3) domains are often indicative of a protein involved in signal transduction related to cytoskeletal organization. First described in the Src cytoplasmic tyrosine kinase. The structure is a partly opened beta barrel.


Pssm-ID: 429575 [Multi-domain]  Cd Length: 54  Bit Score: 46.82  E-value: 9.54e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1720379035  746 ALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFVRL 795
Cdd:pfam07653    4 VIFDYVGTDKNGLTLKKGDVVKVLGKDNDGWWEGETGGRVGLVPSTAVEE 53
SH3_CD2AP_2 cd12054
Second Src Homology 3 domain (SH3B) of CD2-associated protein; CD2AP, also called CMS (Cas ...
745-794 9.62e-07

Second Src Homology 3 domain (SH3B) of CD2-associated protein; CD2AP, also called CMS (Cas ligand with Multiple SH3 domains) or METS1 (Mesenchyme-to-Epithelium Transition protein with SH3 domains), is a cytosolic adaptor protein that plays a role in regulating the cytoskeleton. It is critical in cell-to-cell union necessary for kidney function. It also stabilizes the contact between a T cell and antigen-presenting cells. It is primarily expressed in podocytes at the cytoplasmic face of the slit diaphragm and serves as a linker anchoring podocin and nephrin to the actin cytoskeleton. CD2AP contains three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CD2AP to bind various protein partners and assemble complexes that have been implicated in many different functions. This alignment model represents the second SH3 domain (SH3B) of CD2AP. SH3B binds to c-Cbl in a site (TPSSRPLR is the core binding motif) distinct from the c-Cbl/SH3A binding site. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212987 [Multi-domain]  Cd Length: 55  Bit Score: 46.88  E-value: 9.62e-07
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1720379035  745 EALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFVR 794
Cdd:cd12054      4 KVLFEYVPQNEDELELKVGDIIDINEEVEEGWWSGTLNGKSGLFPSNFVK 53
SH3_AHI-1 cd11812
Src Homology 3 domain of Abelson helper integration site-1 (AHI-1); AHI-1, also called ...
746-793 1.31e-06

Src Homology 3 domain of Abelson helper integration site-1 (AHI-1); AHI-1, also called Jouberin, is expressed in high levels in the brain, gonad tissues, and skeletal muscle. It is an adaptor protein that interacts with the small GTPase Rab8a and regulates it distribution and function, affecting cilium formation and vesicle transport. Mutations in the AHI-1 gene can cause Joubert syndrome, a disorder characterized by brainstem malformations, cerebellar aplasia/hypoplasia, and retinal dystrophy. AHI-1 variation is also associated with susceptibility to schizophrenia and type 2 diabetes mellitus progression. AHI-1 contains WD40 and SH3 domains. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212746 [Multi-domain]  Cd Length: 52  Bit Score: 46.35  E-value: 1.31e-06
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1720379035  746 ALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNED-KEAWFPASFV 793
Cdd:cd11812      4 ALYDYTANRSDELTIHRGDIIRVLYKDNDNWWFGSLVNgQQGYFPANYV 52
SH3_Intersectin1_5 cd11995
Fifth Src homology 3 domain (or SH3E) of Intersectin-1; Intersectin-1 (ITSN1) is an adaptor ...
746-795 1.66e-06

Fifth Src homology 3 domain (or SH3E) of Intersectin-1; Intersectin-1 (ITSN1) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN1 localizes in membranous organelles, CCPs, the Golgi complex, and may be involved in the cell membrane trafficking system. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The fifth SH3 domain (or SH3E) of ITSN1 has been shown to bind many protein partners including SGIP1, Sos1, dynamin1/2, CIN85, c-Cbl, SHIP2, N-WASP, and synaptojanin-1, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212928 [Multi-domain]  Cd Length: 54  Bit Score: 46.10  E-value: 1.66e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1720379035  746 ALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFVRL 795
Cdd:cd11995      5 GMYDYTAQNDDELAFSKGQIINVLNKEDPDWWKGELNGQVGLFPSNYVKL 54
SH3_Intersectin1_2 cd11989
Second Src homology 3 domain (or SH3B) of Intersectin-1; Intersectin-1 (ITSN1) is an adaptor ...
744-795 1.66e-06

Second Src homology 3 domain (or SH3B) of Intersectin-1; Intersectin-1 (ITSN1) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN1 localizes in membranous organelles, CCPs, the Golgi complex, and may be involved in the cell membrane trafficking system. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The second SH3 domain (or SH3B) of ITSN1 has been shown to bind WNK and CdGAP. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212922 [Multi-domain]  Cd Length: 52  Bit Score: 46.25  E-value: 1.66e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1720379035  744 AEALWDHVTMDDQELGFKAGDVIQVLEASNKdWWWGRNEDKEAWFPASFVRL 795
Cdd:cd11989      2 AQALYPWRAKKDNHLNFNKNDVITVLEQQDM-WWFGEVQGQKGWFPKSYVKL 52
SH3_Intersectin2_5 cd11996
Fifth Src homology 3 domain (or SH3E) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor ...
746-795 1.92e-06

Fifth Src homology 3 domain (or SH3E) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN2 also functions as a specific GEF for Cdc42 activation in epithelial morphogenesis, and is required in mitotic spindle orientation. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The fifth SH3 domain (or SH3E) of ITSN2 is expected to bind protein partners, similar to ITSN1 which has been shown to bind many protein partners including SGIP1, Sos1, dynamin1/2, CIN85, c-Cbl, SHIP2, N-WASP, and synaptojanin-1, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212929 [Multi-domain]  Cd Length: 54  Bit Score: 46.13  E-value: 1.92e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1720379035  746 ALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFVRL 795
Cdd:cd11996      5 AMYDYTANNEDELSFSKGQLINVLNKDDPDWWQGEINGVTGLFPSNYVKM 54
SH3_D21-like cd12142
Src Homology 3 domain of SH3 domain-containing protein 21 (SH3D21) and similar proteins; ...
743-793 2.21e-06

Src Homology 3 domain of SH3 domain-containing protein 21 (SH3D21) and similar proteins; N-terminal SH3 domain of the uncharacterized protein SH3 domain-containing protein 21, and similar uncharacterized domains, it belongs to the CD2AP-like_3 subfamily of proteins. The CD2AP-like_3 subfamily is composed of the third SH3 domain (SH3C) of CD2AP, CIN85 (Cbl-interacting protein of 85 kDa), and similar domains. CD2AP and CIN85 are adaptor proteins that bind to protein partners and assemble complexes that have been implicated in T cell activation, kidney function, and apoptosis of neuronal cells. They also associate with endocytic proteins, actin cytoskeleton components, and other adaptor proteins involved in receptor tyrosine kinase (RTK) signaling. CD2AP and the main isoform of CIN85 contain three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CD2AP and CIN85 to bind various protein partners and assemble complexes that have been implicated in many different functions. SH3C of both proteins have been shown to bind to ubiquitin. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 213018 [Multi-domain]  Cd Length: 55  Bit Score: 45.92  E-value: 2.21e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 1720379035  743 CAEALWDHVTMDDQELGFKAGDVIQVLEASNKD--WWWGRNEDKEAWFPASFV 793
Cdd:cd12142      1 YCRVLFDYNPVAPDELALKKGDVIEVISKETEDegWWEGELNGRRGFFPDNFV 53
SH3_betaPIX cd12061
Src Homology 3 domain of beta-Pak Interactive eXchange factor; Beta-PIX, also called Rho ...
754-794 2.24e-06

Src Homology 3 domain of beta-Pak Interactive eXchange factor; Beta-PIX, also called Rho guanine nucleotide exchange factor 7 (ARHGEF7) or Cool (Cloned out of Library)-1, activates small GTPases by exchanging bound GDP for free GTP. It acts as a GEF for both Cdc42 and Rac 1, and plays important roles in regulating neuroendocrine exocytosis, focal adhesion maturation, cell migration, synaptic vesicle localization, and insulin secretion. PIX proteins contain an N-terminal SH3 domain followed by RhoGEF (also called Dbl-homologous or DH) and Pleckstrin Homology (PH) domains, and a C-terminal leucine-zipper domain for dimerization. The SH3 domain of PIX binds to an atypical PxxxPR motif in p21-activated kinases (PAKs) with high affinity. The binding of PAKs to PIX facilitate the localization of PAKs to focal complexes and also localizes PAKs to PIX targets Cdc43 and Rac, leading to the activation of PAKs. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212994 [Multi-domain]  Cd Length: 54  Bit Score: 45.83  E-value: 2.24e-06
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|.
gi 1720379035  754 DDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFVR 794
Cdd:cd12061     12 NEDELSFSKGDVIHVTRVEEGGWWEGTHNGRTGWFPSNYVR 52
SH3_Tks_2 cd12016
Second Src homology 3 domain of Tyrosine kinase substrate (Tks) proteins; Tks proteins are Src ...
754-794 2.34e-06

Second Src homology 3 domain of Tyrosine kinase substrate (Tks) proteins; Tks proteins are Src substrates and scaffolding proteins that play important roles in the formation of podosomes and invadopodia, the dynamic actin-rich structures that are related to cell migration and cancer cell invasion. Vertebrates contain two Tks proteins, Tks4 (Tyr kinase substrate with four SH3 domains) and Tks5 (Tyr kinase substrate with five SH3 domains), which display partially overlapping but non-redundant functions. Both associate with the ADAMs family of transmembrane metalloproteases, which function as sheddases and mediators of cell and matrix interactions. Tks5 interacts with N-WASP and Nck, while Tks4 is essential for the localization of MT1-MMP (membrane-type 1 matrix metalloproteinase) to invadopodia. Tks proteins contain an N-terminal Phox homology (PX) domain and four or five SH3 domains. This model characterizes the second SH3 domain of Tks proteins. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212949  Cd Length: 54  Bit Score: 45.91  E-value: 2.34e-06
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|.
gi 1720379035  754 DDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFVR 794
Cdd:cd12016     13 NEDEIGFETGVVVEVIQKNLDGWWKIRYQGKEGWAPATYLK 53
SH3_Stac3_1 cd11986
First C-terminal Src homology 3 domain of SH3 and cysteine-rich domain-containing protein 3 ...
746-793 2.83e-06

First C-terminal Src homology 3 domain of SH3 and cysteine-rich domain-containing protein 3 (Stac3); Stac proteins are putative adaptor proteins that contain a cysteine-rich C1 domain and one or two SH3 domains at the C-terminus. There are three mammalian members (Stac1, Stac2, and Stac3) of this family. Stac1 and Stac3 contain two SH3 domains while Stac2 contains a single SH3 domain at the C-terminus. Stac1 and Stac2 have been found to be expressed differently in mature dorsal root ganglia (DRG) neurons. Stac1 is mainly expressed in peptidergic neurons while Stac2 is found in a subset of nonpeptidergic and all trkB+ neurons. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212919 [Multi-domain]  Cd Length: 53  Bit Score: 45.67  E-value: 2.83e-06
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*...
gi 1720379035  746 ALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFV 793
Cdd:cd11986      4 ALYRFKALEKDDLDFHPGERITVIDDSNEEWWRGKIGEKTGYFPMNFI 51
SH3_Tks5_2 cd12077
Second Src homology 3 domain of Tyrosine kinase substrate with five SH3 domains; Tks5, also ...
757-794 3.00e-06

Second Src homology 3 domain of Tyrosine kinase substrate with five SH3 domains; Tks5, also called SH3 and PX domain-containing protein 2A (SH3PXD2A) or Five SH (FISH), is a scaffolding protein and Src substrate that is localized in podosomes, which are electron-dense structures found in Src-transformed fibroblasts, osteoclasts, macrophages, and some invasive cancer cells. It binds and regulates some members of the ADAMs family of transmembrane metalloproteases, which function as sheddases and mediators of cell and matrix interactions. It is required for podosome formation, degradation of the extracellular matrix, and cancer cell invasion. Tks5 contains an N-terminal Phox homology (PX) domain and five SH3 domains. This model characterizes the second SH3 domain of Tks5. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 213010  Cd Length: 54  Bit Score: 45.41  E-value: 3.00e-06
                           10        20        30
                   ....*....|....*....|....*....|....*...
gi 1720379035  757 ELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFVR 794
Cdd:cd12077     16 EIGFEKGVTVEVIQKNLEGWWYIRYLGKEGWAPASYLK 53
SH3_Sdc25 cd11883
Src Homology 3 domain of Sdc25/Cdc25 guanine nucleotide exchange factors; This subfamily is ...
746-792 3.61e-06

Src Homology 3 domain of Sdc25/Cdc25 guanine nucleotide exchange factors; This subfamily is composed of the Saccharomyces cerevisiae guanine nucleotide exchange factors (GEFs) Sdc25 and Cdc25, and similar proteins. These GEFs regulate Ras by stimulating the GDP/GTP exchange on Ras. Cdc25 is involved in the Ras/PKA pathway that plays an important role in the regulation of metabolism, stress responses, and proliferation, depending on available nutrients and conditions. Proteins in this subfamily contain an N-terminal SH3 domain as well as REM (Ras exchanger motif) and RasGEF domains at the C-terminus. SH3 domains bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs; they play a role in the regulation of enzymes by intramolecular interactions, changing the subcellular localization of signal pathway components and mediate multiprotein complex assemblies.


Pssm-ID: 212816  Cd Length: 55  Bit Score: 45.35  E-value: 3.61e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1720379035  746 ALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWG-----RNEDKEAWFPASF 792
Cdd:cd11883      4 ALYDFTPKSKNQLSFKAGDIIYVLNKDPSGWWDGviissSGKVKRGWFPSNY 55
SH3_SH3YL1_like cd11841
Src homology 3 domain of SH3 domain containing Ysc84-like 1 (SH3YL1) protein; SH3YL1 localizes ...
744-793 4.12e-06

Src homology 3 domain of SH3 domain containing Ysc84-like 1 (SH3YL1) protein; SH3YL1 localizes to the plasma membrane and is required for dorsal ruffle formation. It binds phosphoinositides (PIs) with high affinity through its N-terminal SYLF domain (also called DUF500). In addition, SH3YL1 contains a C-terminal SH3 domain which has been reported to bind to N-WASP, dynamin 2, and SHIP2 (a PI 5-phosphatase). SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212775  Cd Length: 54  Bit Score: 45.08  E-value: 4.12e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1720379035  744 AEALWDHVTMDDQELGFKAGDVIQVLEASNK--DWWWGRNEDKEAWFPASFV 793
Cdd:cd11841      2 VTALYSFEGQQPCDLSFQAGDRITVLTRTDSqfDWWEGRLRGRVGIFPANYV 53
SH3_Brk cd11847
Src homology 3 domain of Brk (Breast tumor kinase) Protein Tyrosine Kinase (PTK), also called ...
746-784 4.54e-06

Src homology 3 domain of Brk (Breast tumor kinase) Protein Tyrosine Kinase (PTK), also called PTK6; Brk is a cytoplasmic (or non-receptor) PTK with limited homology to Src kinases. It has been found to be overexpressed in a majority of breast tumors. It plays roles in normal cell differentiation, proliferation, survival, migration, and cell cycle progression. Brk substrates include RNA-binding proteins (SLM-1/2, Sam68), transcription factors (STAT3/5), and signaling molecules (Akt, paxillin, IRS-4). Src kinases in general contain an N-terminal SH4 domain with a myristoylation site, followed by SH3 and SH2 domains, a tyr kinase domain, and a regulatory C-terminal region containing a conserved tyr; they are activated by autophosphorylation at the tyr kinase domain, but are negatively regulated by phosphorylation at the C-terminal tyr by Csk (C-terminal Src Kinase). However, Brk lacks the N-terminal myristoylation site. The SH3 domain of Src kinases contributes to substrate recruitment by binding adaptor proteins/substrates, and regulation of kinase activity through an intramolecular interaction. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212781 [Multi-domain]  Cd Length: 58  Bit Score: 45.24  E-value: 4.54e-06
                           10        20        30
                   ....*....|....*....|....*....|....*....
gi 1720379035  746 ALWDHVTMDDQELGFKAGDVIQVLEASNkDWWWGRNEDK 784
Cdd:cd11847      4 ALWDFKARGDEELSFQAGDQFRIAERSG-DWWTALKLDR 41
SH3_DNMBP_N3 cd11796
Third N-terminal Src homology 3 domain of Dynamin Binding Protein, also called Tuba; DNMBP or ...
744-793 4.73e-06

Third N-terminal Src homology 3 domain of Dynamin Binding Protein, also called Tuba; DNMBP or Tuba is a cdc42-specific guanine nucleotide exchange factor (GEF) that contains four N-terminal SH3 domains, a central RhoGEF [or Dbl homology (DH)] domain followed by a Bin/Amphiphysin/Rvs (BAR) domain, and two C-terminal SH3 domains. It provides a functional link between dynamin and key regulatory proteins of the actin cytoskeleton. It plays an important role in regulating cell junction configuration. The four N-terminal SH3 domains of DNMBP binds the GTPase dynamin, which plays an important role in the fission of endocytic vesicles. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212730  Cd Length: 51  Bit Score: 44.65  E-value: 4.73e-06
                           10        20        30        40        50
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gi 1720379035  744 AEALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFV 793
Cdd:cd11796      2 ARVLQDLSAQLDEELDLREGDVVTITGILDKGWFRGELNGRRGIFPEGFV 51
SH3_CD2AP-like_2 cd11874
Second Src Homology 3 domain (SH3B) of CD2-associated protein and similar proteins; This ...
744-795 5.90e-06

Second Src Homology 3 domain (SH3B) of CD2-associated protein and similar proteins; This subfamily is composed of the second SH3 domain (SH3B) of CD2AP, CIN85 (Cbl-interacting protein of 85 kDa), and similar domains. CD2AP and CIN85 are adaptor proteins that bind to protein partners and assemble complexes that have been implicated in T cell activation, kidney function, and apoptosis of neuronal cells. They also associate with endocytic proteins, actin cytoskeleton components, and other adaptor proteins involved in receptor tyrosine kinase (RTK) signaling. CD2AP and the main isoform of CIN85 contain three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CD2AP and CIN85 to bind various protein partners and assemble complexes that have been implicated in many different functions. SH3B of both proteins have been shown to bind to Cbl. In the case of CD2AP, its SH3B binds to Cbl at a site distinct from the c-Cbl/SH3A binding site. The CIN85 SH3B also binds ubiquitin. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212807 [Multi-domain]  Cd Length: 53  Bit Score: 44.63  E-value: 5.90e-06
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1720379035  744 AEALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFVRL 795
Cdd:cd11874      2 CKVLFSYTPQNEDELELKVGDTIEVLGEVEEGWWEGKLNGKVGVFPSNFVKE 53
PH1_FGD1-4_like cd13388
FYVE, RhoGEF and PH domain containing/faciogenital dysplasia proteins 1-4 and similar proteins, ...
1048-1147 7.82e-06

FYVE, RhoGEF and PH domain containing/faciogenital dysplasia proteins 1-4 and similar proteins, N-terminal Pleckstrin homology (PH) domain; In general, FGDs have a RhoGEF (DH) domain, followed by an N-terminal PH domain, a FYVE domain and a C-terminal PH domain. All FGDs are guanine nucleotide exchange factors that activates the Rho GTPase Cdc42, an important regulator of membrane trafficking. The RhoGEF domain is responsible for GEF catalytic activity, while the N-terminal PH domain is involved in intracellular targeting of the DH domain. Mutations in the FGD1 gene are responsible for the X-linked disorder known as faciogenital dysplasia (FGDY). Both FGD1 and FGD3 are targeted by the ubiquitin ligase SCF(FWD1/beta-TrCP) upon phosphorylation of two serine residues in its DSGIDS motif and subsequently degraded by the proteasome. They play different roles to regulate cellular functions, even though their intracellular levels are tightly controlled by the same destruction pathway. FGD4 is one of the genes associated with Charcot-Marie-Tooth neuropathy type 4 (CMT4), a group of progressive motor and sensory axonal and demyelinating neuropathies that are distinguished from other forms of CMT by autosomal recessive inheritance. Those affected have distal muscle weakness and atrophy associated with sensory loss and, frequently, pes cavus foot deformity. PH domains have diverse functions, but in general are involved in targeting proteins to the appropriate cellular location or in the interaction with a binding partner. They share little sequence conservation, but all have a common fold, which is electrostatically polarized. Less than 10% of PH domains bind phosphoinositide phosphates (PIPs) with high affinity and specificity. PH domains are distinguished from other PIP-binding domains by their specific high-affinity binding to PIPs with two vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which results in targeting some PH domain proteins to the plasma membrane. A few display strong specificity in lipid binding. Any specificity is usually determined by loop regions or insertions in the N-terminus of the domain, which are not conserved across all PH domains. PH domains are found in cellular signaling proteins such as serine/threonine kinase, tyrosine kinases, regulators of G-proteins, endocytotic GTPases, adaptors, as well as cytoskeletal associated molecules and in lipid associated enzymes.


Pssm-ID: 275423  Cd Length: 94  Bit Score: 45.39  E-value: 7.82e-06
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gi 1720379035 1048 LIHSGELTKIT-RQGKSQQRIFFLFDHQLVSC-KKDLLRRDMLYYKGRMDMDEVELVDVEDgrdkdwsLSLRNAFkLVSK 1125
Cdd:cd13388      1 LIKEGKILKISaRNGDTQERYLFLFNDMLLYCsPRLRLIGQKYKVRARFDVDGMQVLEGDN-------LETPHTF-YVRG 72
                           90       100
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gi 1720379035 1126 ATDEVHLfCARKQEDKARWLQA 1147
Cdd:cd13388     73 KQRSLEL-QASTQEEKAEWVDA 93
SH3_ARHGAP9_like cd11888
Src Homology 3 domain of Rho GTPase-activating protein 9 and similar proteins; This subfamily ...
741-792 7.94e-06

Src Homology 3 domain of Rho GTPase-activating protein 9 and similar proteins; This subfamily is composed of Rho GTPase-activating proteins including mammalian ARHGAP9, and vertebrate ARHGAPs 12 and 27. RhoGAPs (or ARHGAPs) bind to Rho proteins and enhance the hydrolysis rates of bound GTP. ARHGAP9 functions as a GAP for Rac and Cdc42, but not for RhoA. It negatively regulates cell migration and adhesion. It also acts as a docking protein for the MAP kinases Erk2 and p38alpha, and may facilitate cross-talk between the Rho GTPase and MAPK pathways to control actin remodeling. ARHGAP27, also called CAMGAP1, shows GAP activity towards Rac1 and Cdc42. It binds the adaptor protein CIN85 and may play a role in clathrin-mediated endocytosis. ARHGAP12 has been shown to display GAP activity towards Rac1. It plays a role in regulating HFG-driven cell growth and invasiveness. ARHGAPs in this subfamily contain SH3, WW, Pleckstin homology (PH), and RhoGAP domains. SH3 domains bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs; they play a role in the regulation of enzymes by intramolecular interactions, changing the subcellular localization of signal pathway components and mediate multiprotein complex assemblies.


Pssm-ID: 212821 [Multi-domain]  Cd Length: 54  Bit Score: 44.28  E-value: 7.94e-06
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gi 1720379035  741 VVCAEALWDHVTMDDQELGFKAGDVIQVLEASNKDWWW-GRNEDKEAWF-PASF 792
Cdd:cd11888      1 YVVVLYPFEYTGKDGRKVSIKEGERFLLLKKSNDDWWQvRRPGDSKPFYvPAQY 54
SH3_p47phox_1 cd12021
First or N-terminal Src homology 3 domain of the p47phox subunit of NADPH oxidase, also called ...
746-793 8.30e-06

First or N-terminal Src homology 3 domain of the p47phox subunit of NADPH oxidase, also called Neutrophil Cytosolic Factor 1; p47phox, or NCF1, is a cytosolic subunit of the phagocytic NADPH oxidase complex (also called Nox2 or gp91phox), which plays a key role in the ability of phagocytes to defend against bacterial infections. NADPH oxidase catalyzes the transfer of electrons from NADPH to oxygen during phagocytosis forming superoxide and reactive oxygen species. p47phox is required for activation of NADH oxidase and plays a role in translocation. It contains an N-terminal Phox homology (PX) domain, tandem SH3 domains (N-SH3 and C-SH3), a polybasic/autoinhibitory region, and a C-terminal proline-rich region (PRR). This model characterizes the first SH3 domain (or N-SH3) of p47phox. In its inactive state, the tandem SH3 domains interact intramolecularly with the autoinhibitory region; upon activation, the tandem SH3 domains are exposed through a conformational change, resulting in their binding to the PRR of p22phox and the activation of NADPH oxidase. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212954 [Multi-domain]  Cd Length: 53  Bit Score: 44.18  E-value: 8.30e-06
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gi 1720379035  746 ALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFV 793
Cdd:cd12021      4 AIADYEKSSKSEMALKTGDVVEVVEKSENGWWFCQLKAKRGWVPASYL 51
SH3_Eve1_5 cd11818
Fifth Src homology 3 domain of ADAM-binding protein Eve-1; Eve-1, also called SH3 ...
744-792 9.62e-06

Fifth Src homology 3 domain of ADAM-binding protein Eve-1; Eve-1, also called SH3 domain-containing protein 19 (SH3D19) or EEN-binding protein (EBP), exists in multiple alternatively spliced isoforms. The longest isoform contains five SH3 domain in the C-terminal region and seven proline-rich motifs in the N-terminal region. It is abundantly expressed in skeletal muscle and heart, and may be involved in regulating the activity of ADAMs (A disintegrin and metalloproteases). Eve-1 interacts with EEN, an endophilin involved in endocytosis and may be the target of the MLL-EEN fusion protein that is implicated in leukemogenesis. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212752 [Multi-domain]  Cd Length: 50  Bit Score: 44.01  E-value: 9.62e-06
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gi 1720379035  744 AEALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASF 792
Cdd:cd11818      2 ARALYDFTGENEDELSFKAGDIITELESIDEEWMSGELRGKSGIFPKNF 50
SH3_Tks4_3 cd12078
Third Src homology 3 domain of Tyrosine kinase substrate with four SH3 domains; Tks4, also ...
758-793 1.15e-05

Third Src homology 3 domain of Tyrosine kinase substrate with four SH3 domains; Tks4, also called SH3 and PX domain-containing protein 2B (SH3PXD2B) or HOFI, is a Src substrate and scaffolding protein that plays an important role in the formation of podosomes and invadopodia, the dynamic actin-rich structures that are related to cell migration and cancer cell invasion. It is required in the formation of functional podosomes, EGF-induced membrane ruffling, and lamellipodia generation. It plays an important role in cellular attachment and cell spreading. Tks4 is essential for the localization of MT1-MMP (membrane-type 1 matrix metalloproteinase) to invadopodia. It contains an N-terminal Phox homology (PX) domain and four SH3 domains. This model characterizes the third SH3 domain of Tks4. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 213011  Cd Length: 53  Bit Score: 43.91  E-value: 1.15e-05
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gi 1720379035  758 LGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFV 793
Cdd:cd12078     16 ISFQAGLKVEVIEKNLSGWWYIQIEDKEGWAPATFI 51
SH3_CIN85_2 cd12055
Second Src Homology 3 domain (SH3B) of Cbl-interacting protein of 85 kDa; CIN85, also called ...
745-794 1.18e-05

Second Src Homology 3 domain (SH3B) of Cbl-interacting protein of 85 kDa; CIN85, also called SH3 domain-containing kinase-binding protein 1 (SH3KBP1) or CD2-binding protein 3 (CD2BP3) or Ruk, is an adaptor protein that is involved in the downregulation of receptor tyrosine kinases by facilitating endocytosis through interaction with endophilin-associated ubiquitin ligase Cbl proteins. It is also important in many other cellular processes including vesicle-mediated transport, cytoskeletal remodelling, apoptosis, cell adhesion and migration, and viral infection, among others. CIN85 exists as multiple variants from alternative splicing; the main variant contains three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CIN85 to bind various protein partners and assemble complexes that have been implicated in many different functions. This alignment model represents the second SH3 domain (SH3B) of CIN85. SH3B has been shown to bind Cbl proline-rich peptides and ubiquitin. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212988 [Multi-domain]  Cd Length: 53  Bit Score: 43.83  E-value: 1.18e-05
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gi 1720379035  745 EALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFVR 794
Cdd:cd12055      3 QVAFSYLPQNEDELELKVGDIIEVVGEVEEGWWEGVLNGKTGMFPSNFIK 52
SH3_Tks5_1 cd12074
First Src homology 3 domain of Tyrosine kinase substrate with five SH3 domains; Tks5, also ...
754-793 1.24e-05

First Src homology 3 domain of Tyrosine kinase substrate with five SH3 domains; Tks5, also called SH3 and PX domain-containing protein 2A (SH3PXD2A) or Five SH (FISH), is a scaffolding protein and Src substrate that is localized in podosomes, which are electron-dense structures found in Src-transformed fibroblasts, osteoclasts, macrophages, and some invasive cancer cells. It binds and regulates some members of the ADAMs family of transmembrane metalloproteases, which function as sheddases and mediators of cell and matrix interactions. It is required for podosome formation, degradation of the extracellular matrix, and cancer cell invasion. Tks5 contains an N-terminal Phox homology (PX) domain and five SH3 domains. This model characterizes the first SH3 domain of Tks5. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 213007 [Multi-domain]  Cd Length: 53  Bit Score: 43.93  E-value: 1.24e-05
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gi 1720379035  754 DDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFV 793
Cdd:cd12074     12 ENSEISLQAGEVVDVIEKNESGWWFVSTAEEQGWVPATYL 51
SH3_Pex13p_fungal cd11771
Src Homology 3 domain of fungal peroxisomal membrane protein Pex13p; Pex13p, located in the ...
744-793 1.78e-05

Src Homology 3 domain of fungal peroxisomal membrane protein Pex13p; Pex13p, located in the peroxisomal membrane, contains two transmembrane regions and a C-terminal SH3 domain. It binds to the peroxisomal targeting type I (PTS1) receptor Pex5p and the docking factor Pex14p through its SH3 domain. It is essential for both PTS1 and PTS2 protein import pathways into the peroxisomal matrix. Pex13p binds Pex14p, which contains a PxxP motif, in a classical fashion to the proline-rich ligand binding site of its SH3 domain. It binds the WxxxF/Y motif of Pex5p in a novel site that does not compete with Pex14p binding. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212705 [Multi-domain]  Cd Length: 60  Bit Score: 43.42  E-value: 1.78e-05
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gi 1720379035  744 AEALWDHVTMDDQ-ELGFKAGDVIQVLEASNK-----DWWWGRNED-KEAWFPASFV 793
Cdd:cd11771      2 CRALYDFTPENPEmELSLKKGDIVAVLSKTDPlgrdsEWWKGRTRDgRIGWFPSNYV 58
SH3_Nck_2 cd11766
Second Src Homology 3 domain of Nck adaptor proteins; Nck adaptor proteins regulate actin ...
755-793 1.86e-05

Second Src Homology 3 domain of Nck adaptor proteins; Nck adaptor proteins regulate actin cytoskeleton dynamics by linking proline-rich effector molecules to protein tyrosine kinases and phosphorylated signaling intermediates. They contain three SH3 domains and a C-terminal SH2 domain. They function downstream of the PDGFbeta receptor and are involved in Rho GTPase signaling and actin dynamics. Vertebrates contain two Nck adaptor proteins: Nck1 (also called Nckalpha) and Nck2 (also called Nckbeta or Growth factor receptor-bound protein 4, Grb4), which show partly overlapping functions but also bind distinct targets. Their SH3 domains are involved in recruiting downstream effector molecules, such as the N-WASP/Arp2/3 complex, which when activated induces actin polymerization that results in the production of pedestals, or protrusions of the plasma membrane. The second SH3 domain of Nck appears to prefer ligands containing the APxxPxR motif. SH3 domains are protein interaction domains that usually bind to proline-rich ligands with moderate affinity and selectivity, preferentially a PxxP motif. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212700 [Multi-domain]  Cd Length: 53  Bit Score: 43.02  E-value: 1.86e-05
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gi 1720379035  755 DQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFV 793
Cdd:cd11766     13 EDELSLRKGDRVLVLEKSSDGWWRGECNGQVGWFPSNYV 51
SH3_Tks_3 cd12017
Third Src homology 3 domain of Tyrosine kinase substrate (Tks) proteins; Tks proteins are Src ...
758-793 2.13e-05

Third Src homology 3 domain of Tyrosine kinase substrate (Tks) proteins; Tks proteins are Src substrates and scaffolding proteins that play important roles in the formation of podosomes and invadopodia, the dynamic actin-rich structures that are related to cell migration and cancer cell invasion. Vertebrates contain two Tks proteins, Tks4 (Tyr kinase substrate with four SH3 domains) and Tks5 (Tyr kinase substrate with five SH3 domains), which display partially overlapping but non-redundant functions. Both associate with the ADAMs family of transmembrane metalloproteases, which function as sheddases and mediators of cell and matrix interactions. Tks5 interacts with N-WASP and Nck, while Tks4 is essential for the localization of MT1-MMP (membrane-type 1 matrix metalloproteinase) to invadopodia. Tks proteins contain an N-terminal Phox homology (PX) domain and four or five SH3 domains. This model characterizes the third SH3 domain of Tks proteins. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212950  Cd Length: 53  Bit Score: 43.21  E-value: 2.13e-05
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gi 1720379035  758 LGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFV 793
Cdd:cd12017     16 ISFQKGQKVEVIDKNPSGWWYVKIDGKEGWAPSSYI 51
SH3_VAV1_2 cd11976
C-terminal (or second) Src homology 3 domain of VAV1 protein; VAV1 is expressed predominantly ...
744-793 2.23e-05

C-terminal (or second) Src homology 3 domain of VAV1 protein; VAV1 is expressed predominantly in the hematopoietic system and it plays an important role in the development and activation of B and T cells. It is activated by tyrosine phosphorylation to function as a guanine nucleotide exchange factor (GEF) for Rho GTPases following cell surface receptor activation, triggering various effects such as cytoskeletal reorganization, transcription regulation, cell cycle progression, and calcium mobilization. It also serves as a scaffold protein and has been shown to interact with Ku70, Socs1, Janus kinase 2, SIAH2, S100B, Abl gene, ZAP-70, SLP76, and Syk, among others. VAV proteins contain several domains that enable their function: N-terminal calponin homology (CH), acidic, RhoGEF (also called Dbl-homologous or DH), Pleckstrin Homology (PH), C1 (zinc finger), SH2, and two SH3 domains. The C-terminal SH3 domain of Vav1 interacts with a wide variety of proteins including cytoskeletal regulators (zyxin), RNA-binding proteins (Sam68), transcriptional regulators, viral proteins, and dynamin 2. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212909 [Multi-domain]  Cd Length: 54  Bit Score: 43.01  E-value: 2.23e-05
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gi 1720379035  744 AEALWDHVTMDDQELGFKAGDVIQVLEASNKDWWW-GRNEDKEAWFPASFV 793
Cdd:cd11976      2 AKARYDFCARDRSELSLKEGDIIKILNKKGQQGWWrGEIYGRVGWFPANYV 52
SH3_SH3RF_1 cd11786
First Src Homology 3 domain of SH3 domain containing ring finger proteins; This model ...
743-793 3.36e-05

First Src Homology 3 domain of SH3 domain containing ring finger proteins; This model represents the first SH3 domain of SH3RF1 (or POSH), SH3RF2 (or POSHER), SH3RF3 (POSH2), and similar domains. Members of this family are scaffold proteins that function as E3 ubiquitin-protein ligases. They all contain an N-terminal RING finger domain and multiple SH3 domains; SH3RF1 and SH3RF3 have four SH3 domains while SH3RF2 has three. SH3RF1 plays a role in calcium homeostasis through the control of the ubiquitin domain protein Herp. It may also have a role in regulating death receptor mediated and JNK mediated apoptosis. SH3RF3 interacts with p21-activated kinase 2 (PAK2) and GTP-loaded Rac1. It may play a role in regulating JNK mediated apoptosis in certain conditions. SH3RF2 acts as an anti-apoptotic regulator of the JNK pathway by binding to and promoting the degradation of SH3RF1. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212720 [Multi-domain]  Cd Length: 53  Bit Score: 42.35  E-value: 3.36e-05
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gi 1720379035  743 CAEALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFV 793
Cdd:cd11786      1 CAKALYNYEGKEPGDLSFKKGDIILLRKRIDENWYHGECNGKQGFFPASYV 51
SH3_Cortactin cd11959
Src homology 3 domain of Cortactin; Cortactin was originally identified as a substrate of Src ...
744-795 4.17e-05

Src homology 3 domain of Cortactin; Cortactin was originally identified as a substrate of Src kinase. It is an actin regulatory protein that binds to the Arp2/3 complex and stabilizes branched actin filaments. It is involved in cellular processes that affect cell motility, adhesion, migration, endocytosis, and invasion. It is expressed ubiquitously except in hematopoietic cells, where the homolog hematopoietic lineage cell-specific 1 (HS1) is expressed instead. Cortactin contains an N-terminal acidic domain, several copies of a repeat domain found in cortactin and HS1, a proline-rich region, and a C-terminal SH3 domain. The N-terminal region interacts with the Arp2/3 complex and F-actin, and is crucial in regulating branched actin assembly. Cortactin also serves as a scaffold and provides a bridge to the actin cytoskeleton for membrane trafficking and signaling proteins that bind to its SH3 domain. Binding partners for the SH3 domain of cortactin include dynamin2, N-WASp, MIM, FGD1, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212892 [Multi-domain]  Cd Length: 53  Bit Score: 42.40  E-value: 4.17e-05
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gi 1720379035  744 AEALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFVRL 795
Cdd:cd11959      2 AVALYDYQAADDDEISFDPDDIITNIEMIDEGWWRGVCRGKYGLFPANYVEL 53
PHA03247 PHA03247
large tegument protein UL36; Provisional
200-446 4.35e-05

large tegument protein UL36; Provisional


Pssm-ID: 223021 [Multi-domain]  Cd Length: 3151  Bit Score: 48.01  E-value: 4.35e-05
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gi 1720379035  200 PEPAVCEIQVRDPEPSRAvPLPRRSKSIDSLSVLKSSFKRKSASNltELQGDRQVPSRTLSSFFTDPEkpGGSERRTRRW 279
Cdd:PHA03247  2593 PQSARPRAPVDDRGDPRG-PAPPSPLPPDTHAPDPPPPSPSPAAN--EPDPHPPPTVPPPERPRDDPA--PGRVSRPRRA 2667
                           90       100       110       120       130       140       150       160
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gi 1720379035  280 RSPIRAKDFDRVLRlvsnvkdaAWKREAPRSAApGPGPGLGDENPLLAPRSKLHDDYSRRTSSSVEPDARRGGSPciPAP 359
Cdd:PHA03247  2668 RRLGRAAQASSPPQ--------RPRRRAARPTV-GSLTSLADPPPPPPTPEPAPHALVSATPLPPGPAAARQASP--ALP 2736
                          170       180       190       200       210       220       230       240
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gi 1720379035  360 CTTAPYAAPE-PHLDVDTAVFPLETKSAQPLGNDGPRASSPSPIPTDPEGLSQGSSEAHTGSQHPFNPVQLPTPL---RP 435
Cdd:PHA03247  2737 AAPAPPAVPAgPATPGGPARPARPPTTAGPPAPAPPAAPAAGPPRRLTRPAVASLSESRESLPSPWDPADPPAAVlapAA 2816
                          250
                   ....*....|.
gi 1720379035  436 TTPKPQSPQSP 446
Cdd:PHA03247  2817 ALPPAASPAGP 2827
SH3_Intersectin_5 cd11840
Fifth Src homology 3 domain (or SH3E) of Intersectin; Intersectins (ITSNs) are adaptor ...
746-793 4.56e-05

Fifth Src homology 3 domain (or SH3E) of Intersectin; Intersectins (ITSNs) are adaptor proteins that function in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. They are essential for initiating clathrin-coated pit formation. They bind to many proteins through their multidomain structure and facilitate the assembly of multimeric complexes. Vertebrates contain two ITSN proteins, ITSN1 and ITSN2, which exist in alternatively spliced short and long isoforms. The short isoforms contain two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoforms, in addition, contain RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. ITSN1 and ITSN2 are both widely expressed, with variations depending on tissue type and stage of development. The fifth SH3 domain (or SH3E) of ITSN1 has been shown to bind many protein partners including SGIP1, Sos1, dynamin1/2, CIN85, c-Cbl, SHIP2, N-WASP, and synaptojanin-1, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212774 [Multi-domain]  Cd Length: 53  Bit Score: 42.02  E-value: 4.56e-05
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gi 1720379035  746 ALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFV 793
Cdd:cd11840      4 ALFPYTAQNEDELSFQKGDIINVLSKDDPDWWRGELNGQTGLFPSNYV 51
SH3_Tec_like cd11768
Src Homology 3 domain of Tec-like Protein Tyrosine Kinases; The Tec (Tyrosine kinase expressed ...
746-794 4.87e-05

Src Homology 3 domain of Tec-like Protein Tyrosine Kinases; The Tec (Tyrosine kinase expressed in hepatocellular carcinoma) subfamily is composed of Tec, Btk, Bmx (Etk), Itk (Tsk, Emt), Rlk (Txk), and similar proteins. They are cytoplasmic (or nonreceptor) tyr kinases containing Src homology protein interaction domains (SH3, SH2) N-terminal to the catalytic tyr kinase domain. Most Tec subfamily members (except Rlk) also contain an N-terminal pleckstrin homology (PH) domain, which binds the products of PI3K and allows membrane recruitment and activation. In addition, some members contain the Tec homology (TH) domain, which contains proline-rich and zinc-binding regions. Tec kinases are expressed mainly by haematopoietic cells, although Tec and Bmx are also found in endothelial cells. B-cells express Btk and Tec, while T-cells express Itk, Txk, and Tec. Collectively, Tec kinases are expressed in a variety of myeloid cells such as mast cells, platelets, macrophages, and dendritic cells. Each Tec kinase shows a distinct cell-type pattern of expression. The function of Tec kinases in lymphoid cells have been studied extensively. They play important roles in the development, differentiation, maturation, regulation, survival, and function of B-cells and T-cells. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212702 [Multi-domain]  Cd Length: 54  Bit Score: 41.88  E-value: 4.87e-05
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1720379035  746 ALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNED-KEAWFPASFVR 794
Cdd:cd11768      4 ALYDFQPIEPGDLPLEKGEEYVVLDDSNEHWWRARDKNgNEGYIPSNYVT 53
SH3_p67phox-like_C cd11870
C-terminal Src Homology 3 domain of the p67phox subunit of NADPH oxidase and similar proteins; ...
745-793 5.72e-05

C-terminal Src Homology 3 domain of the p67phox subunit of NADPH oxidase and similar proteins; This subfamily is composed of p67phox, NADPH oxidase activator 1 (Noxa1), and similar proteins. p67phox, also called Neutrophil cytosol factor 2 (NCF-2), and Noxa1 are homologs and are the cytosolic subunits of the phagocytic (Nox2) and nonphagocytic (Nox1) NADPH oxidase complexes, respectively. NADPH oxidase catalyzes the transfer of electrons from NADPH to oxygen during phagocytosis forming superoxide and reactive oxygen species. p67phox and Noxa1 play regulatory roles. p67phox contains N-terminal TPR, first SH3 (or N-terminal or central SH3), PB1, and C-terminal SH3 domains. Noxa1 has a similar domain architecture except it is lacking the N-terminal SH3 domain. The TPR domain of both binds activated GTP-bound Rac, while the C-terminal SH3 domain of p67phox and Noxa1 binds the polyproline motif found at the C-terminus of p47phox and Noxo1, respectively. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212803 [Multi-domain]  Cd Length: 53  Bit Score: 41.75  E-value: 5.72e-05
                           10        20        30        40
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gi 1720379035  745 EALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFV 793
Cdd:cd11870      3 VALHRYEAQGPEDLGFREGDTIDVLSEVNEAWLEGHSDGRVGIFPKCFV 51
SH3_VAV_2 cd11830
C-terminal (or second) Src homology 3 domain of VAV proteins; VAV proteins function both as ...
744-793 6.40e-05

C-terminal (or second) Src homology 3 domain of VAV proteins; VAV proteins function both as cytoplasmic guanine nucleotide exchange factors (GEFs) for Rho GTPases and scaffold proteins and they play important roles in cell signaling by coupling cell surface receptors to various effector functions. They play key roles in processes that require cytoskeletal reorganization including immune synapse formation, phagocytosis, cell spreading, and platelet aggregation, among others. Vertebrates have three VAV proteins (VAV1, VAV2, and VAV3). VAV proteins contain several domains that enable their function: N-terminal calponin homology (CH), acidic, RhoGEF (also called Dbl-homologous or DH), Pleckstrin Homology (PH), C1 (zinc finger), SH2, and two SH3 domains. The SH3 domain of VAV is involved in the localization of proteins to specific sites within the cell, by interacting with proline-rich sequences within target proteins. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212764 [Multi-domain]  Cd Length: 54  Bit Score: 41.85  E-value: 6.40e-05
                           10        20        30        40        50
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gi 1720379035  744 AEALWDHVTMDDQELGFKAGDVIQVL-EASNKDWWWGRNEDKEAWFPASFV 793
Cdd:cd11830      2 AKARYDFCARDMRELSLKEGDVVKIYnKKGQQGWWRGEINGRIGWFPSTYV 52
SH3_CRK_N cd11758
N-terminal Src Homology 3 domain of Ct10 Regulator of Kinase adaptor proteins; CRK adaptor ...
746-793 7.03e-05

N-terminal Src Homology 3 domain of Ct10 Regulator of Kinase adaptor proteins; CRK adaptor proteins consists of SH2 and SH3 domains, which bind tyrosine-phosphorylated peptides and proline-rich motifs, respectively. They function downstream of protein tyrosine kinases in many signaling pathways started by various extracellular signals, including growth and differentiation factors. Cellular CRK (c-CRK) contains a single SH2 domain, followed by N-terminal and C-terminal SH3 domains. It is involved in the regulation of many cellular processes including cell growth, motility, adhesion, and apoptosis. CRK has been implicated in the malignancy of various human cancers. The N-terminal SH3 domain of CRK binds a number of target proteins including DOCK180, C3G, SOS, and cABL. The CRK family includes two alternatively spliced protein forms, CRKI and CRKII, that are expressed by the CRK gene, and the CRK-like (CRKL) protein, which is expressed by a distinct gene (CRKL). SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212692 [Multi-domain]  Cd Length: 55  Bit Score: 41.58  E-value: 7.03e-05
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gi 1720379035  746 ALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNED-KEAWFPASFV 793
Cdd:cd11758      5 ALFDFPGNDDEDLPFKKGEILTVIRKPEEQWWNARNSEgKTGMIPVPYV 53
SH3_Tks5_4 cd12019
Fourth Src homology 3 domain of Tyrosine kinase substrate with five SH3 domains; Tks5, also ...
755-795 8.14e-05

Fourth Src homology 3 domain of Tyrosine kinase substrate with five SH3 domains; Tks5, also called SH3 and PX domain-containing protein 2A (SH3PXD2A) or Five SH (FISH), is a scaffolding protein and Src substrate that is localized in podosomes, which are electron-dense structures found in Src-transformed fibroblasts, osteoclasts, macrophages, and some invasive cancer cells. It binds and regulates some members of the ADAMs family of transmembrane metalloproteases, which function as sheddases and mediators of cell and matrix interactions. It is required for podosome formation, degradation of the extracellular matrix, and cancer cell invasion. Tks5 contains an N-terminal Phox homology (PX) domain and five SH3 domains. This model characterizes the fourth SH3 domain of Tks5. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212952  Cd Length: 53  Bit Score: 41.50  E-value: 8.14e-05
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gi 1720379035  755 DQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFVRL 795
Cdd:cd12019     13 DSEISFPAGVEVEVLEKQESGWWYVRFGELEGWAPSHYLEL 53
SH3_Tks_1 cd12015
First Src homology 3 domain of Tyrosine kinase substrate (Tks) proteins; Tks proteins are Src ...
757-792 8.71e-05

First Src homology 3 domain of Tyrosine kinase substrate (Tks) proteins; Tks proteins are Src substrates and scaffolding proteins that play important roles in the formation of podosomes and invadopodia, the dynamic actin-rich structures that are related to cell migration and cancer cell invasion. Vertebrates contain two Tks proteins, Tks4 (Tyr kinase substrate with four SH3 domains) and Tks5 (Tyr kinase substrate with five SH3 domains), which display partially overlapping but non-redundant functions. Both associate with the ADAMs family of transmembrane metalloproteases, which function as sheddases and mediators of cell and matrix interactions. Tks5 interacts with N-WASP and Nck, while Tks4 is essential for the localization of MT1-MMP (membrane-type 1 matrix metalloproteinase) to invadopodia. Tks proteins contain an N-terminal Phox homology (PX) domain and four or five SH3 domains. This model characterizes the first SH3 domain of Tks proteins. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212948  Cd Length: 53  Bit Score: 41.25  E-value: 8.71e-05
                           10        20        30
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gi 1720379035  757 ELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASF 792
Cdd:cd12015     15 EISLRAGDVVDVIEKNENGWWFVSLEDEQGWVPATY 50
SH3_Blk cd12009
Src homology 3 domain of Blk Protein Tyrosine Kinase; Blk is a member of the Src subfamily of ...
743-793 9.54e-05

Src homology 3 domain of Blk Protein Tyrosine Kinase; Blk is a member of the Src subfamily of proteins, which are cytoplasmic (or non-receptor) PTKs. It is expressed specifically in B-cells and is involved in pre-BCR (B-cell receptor) signaling. Src kinases contain an N-terminal SH4 domain with a myristoylation site, followed by SH3 and SH2 domains, a tyr kinase domain, and a regulatory C-terminal region containing a conserved tyr. They are activated by autophosphorylation at the tyr kinase domain, but are negatively regulated by phosphorylation at the C-terminal tyr by Csk (C-terminal Src Kinase). The SH3 domain of Src kinases contributes to substrate recruitment by binding adaptor proteins/substrates, and regulation of kinase activity through an intramolecular interaction. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212942 [Multi-domain]  Cd Length: 54  Bit Score: 41.34  E-value: 9.54e-05
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gi 1720379035  743 CAEALWDHVTMDDQELGFKAGDVIQVLEaSNKDWWWGRN--EDKEAWFPASFV 793
Cdd:cd12009      1 CVIAQYDFVPSNERDLQLKKGEKLQVLK-SDGEWWLAKSltTGKEGYIPSNYV 52
SH3_Nostrin cd11823
Src homology 3 domain of Nitric Oxide Synthase TRaffic INducer; Nostrin is expressed in ...
745-793 1.10e-04

Src homology 3 domain of Nitric Oxide Synthase TRaffic INducer; Nostrin is expressed in endothelial and epithelial cells and is involved in the regulation, trafficking and targeting of endothelial NOS (eNOS). It facilitates the endocytosis of eNOS by coordinating the functions of dynamin and the Wiskott-Aldrich syndrome protein (WASP). Increased expression of Nostrin may be correlated to preeclampsia. Nostrin contains an N-terminal F-BAR domain and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212757 [Multi-domain]  Cd Length: 53  Bit Score: 41.17  E-value: 1.10e-04
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gi 1720379035  745 EALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFV 793
Cdd:cd11823      3 KALYSYTANREDELSLQPGDIIEVHEKQDDGWWLGELNGKKGIFPATYV 51
SH3_iASPP cd11952
Src Homology 3 (SH3) domain of Inhibitor of ASPP protein (iASPP); iASPP, also called ...
746-795 1.38e-04

Src Homology 3 (SH3) domain of Inhibitor of ASPP protein (iASPP); iASPP, also called RelA-associated inhibitor (RAI), is an oncoprotein that inhibits the apoptotic transactivation potential of p53. It is upregulated in human breast cancers expressing wild-type p53, in acute leukemias regardless of the p53 mutation status, as well as in ovarian cancer where it is associated with poor patient outcome and chemoresistance. iASPP is also a binding partner and negative regulator of p65RelA, which promotes cell proliferation and inhibits apoptosis; p65RelA has the opposite effect on cell growth compared to the p53 family. It contains a proline-rich region, four ankyrin (ANK) repeats, and an SH3 domain at its C-terminal half. The SH3 domain and the ANK repeats of iASPP contribute to the p53 binding site; they bind to the DNA binding domain of p53. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212885 [Multi-domain]  Cd Length: 56  Bit Score: 41.07  E-value: 1.38e-04
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gi 1720379035  746 ALWDHVTMDDQELGFKAGDVIQVL--EASNKDWWWGRNEDKEAWFPASFVRL 795
Cdd:cd11952      5 ALWDYSAEFPDELSFKEGDMVTVLrkDGEGTDWWWASLCGREGYVPRNYFGL 56
SH3_Intersectin_4 cd11839
Fourth Src homology 3 domain (or SH3D) of Intersectin; Intersectins (ITSNs) are adaptor ...
744-795 1.55e-04

Fourth Src homology 3 domain (or SH3D) of Intersectin; Intersectins (ITSNs) are adaptor proteins that function in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. They are essential for initiating clathrin-coated pit formation. They bind to many proteins through their multidomain structure and facilitate the assembly of multimeric complexes. Vertebrates contain two ITSN proteins, ITSN1 and ITSN2, which exist in alternatively spliced short and long isoforms. The short isoforms contain two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoforms, in addition, contain RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. ITSN1 and ITSN2 are both widely expressed, with variations depending on tissue type and stage of development. The fourth SH3 domain (or SH3D) of ITSN1 has been shown to bind SHIP2, Numb, CdGAP, and N-WASP. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212773 [Multi-domain]  Cd Length: 58  Bit Score: 40.78  E-value: 1.55e-04
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gi 1720379035  744 AEALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWG----RNEDKEA-WFPASFVRL 795
Cdd:cd11839      2 AQVIAPFTATAENQLSLAVGQLVLVRKKSPSGWWEGelqaRGKKRQIgWFPANYVKL 58
PHA03247 PHA03247
large tegument protein UL36; Provisional
123-446 1.56e-04

large tegument protein UL36; Provisional


Pssm-ID: 223021 [Multi-domain]  Cd Length: 3151  Bit Score: 46.47  E-value: 1.56e-04
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gi 1720379035  123 PTGDPGRAAPNGTVAILGKGLGRCTSLGPVGDGAGSDCSDPEDTED---AFQRSTHRSRSIRRAYGLGRISLLDLGRQPV 199
Cdd:PHA03247  2624 PDPPPPSPSPAANEPDPHPPPTVPPPERPRDDPAPGRVSRPRRARRlgrAAQASSPPQRPRRRAARPTVGSLTSLADPPP 2703
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720379035  200 PEPavcEIQVRDPEPSRAVPLPRRSKSIDSLS--VLKSSFKRKSASNLTELQGDRQVPSRTLSSFFTDPEKP----GGSE 273
Cdd:PHA03247  2704 PPP---TPEPAPHALVSATPLPPGPAAARQASpaLPAAPAPPAVPAGPATPGGPARPARPPTTAGPPAPAPPaapaAGPP 2780
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720379035  274 RRTRRwrsPIRAKdfdrvLRLVSNVKDAAWKREAPRSAAPGPGPGLGDEN---PLLAPRSKLHDDYSRRTSSSVEPDARR 350
Cdd:PHA03247  2781 RRLTR---PAVAS-----LSESRESLPSPWDPADPPAAVLAPAAALPPAAspaGPLPPPTSAQPTAPPPPPGPPPPSLPL 2852
                          250       260       270       280       290       300       310       320
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gi 1720379035  351 GGSPCIPAPCTTAPYAAPEPHLDVDTAVFPLETKSAQPLgndgPRASSPSPIPTD-PEGLSQGSSEAHTGSQHPFNPVQL 429
Cdd:PHA03247  2853 GGSVAPGGDVRRRPPSRSPAAKPAAPARPPVRRLARPAV----SRSTESFALPPDqPERPPQPQAPPPPQPQPQPPPPPQ 2928
                          330
                   ....*....|....*..
gi 1720379035  430 PTPLRPTTPKPQSPQSP 446
Cdd:PHA03247  2929 PQPPPPPPPRPQPPLAP 2945
SH3_Irsp53_BAIAP2L cd11779
Src Homology 3 domain of Insulin Receptor tyrosine kinase Substrate p53, Brain-specific ...
745-794 1.70e-04

Src Homology 3 domain of Insulin Receptor tyrosine kinase Substrate p53, Brain-specific Angiogenesis Inhibitor 1-Associated Protein 2 (BAIAP2)-Like proteins, and similar proteins; Proteins in this family include IRSp53, BAIAP2L1, BAIAP2L2, and similar proteins. They all contain an Inverse-Bin/Amphiphysin/Rvs (I-BAR) or IMD domain in addition to the SH3 domain. IRSp53, also known as BAIAP2, is a scaffolding protein that takes part in many signaling pathways including Cdc42-induced filopodia formation, Rac-mediated lamellipodia extension, and spine morphogenesis. IRSp53 exists as multiple splicing variants that differ mainly at the C-termini. BAIAP2L1, also called IRTKS (Insulin Receptor Tyrosine Kinase Substrate), serves as a substrate for the insulin receptor and binds the small GTPase Rac. It plays a role in regulating the actin cytoskeleton and colocalizes with F-actin, cortactin, VASP, and vinculin. IRSp53 and IRTKS also mediate the recruitment of effector proteins Tir and EspFu, which regulate host cell actin reorganization, to bacterial attachment sites. BAIAP2L2 co-localizes with clathrin plaques but its function has not been determined. The SH3 domains of IRSp53 and IRTKS have been shown to bind the proline-rich C-terminus of EspFu. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212713 [Multi-domain]  Cd Length: 57  Bit Score: 40.77  E-value: 1.70e-04
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gi 1720379035  745 EALWDHVTMDDQELGFKAGDVIQVLEASNKD-WWWGRNE--DKEAWFPASFVR 794
Cdd:cd11779      4 KALYPHAAGGETQLSFEEGDVITLLGPEPRDgWHYGENErsGRRGWFPIAYTE 56
SH3_ASAP cd11821
Src homology 3 domain of ArfGAP with SH3 domain, ankyrin repeat and PH domain containing ...
746-792 1.77e-04

Src homology 3 domain of ArfGAP with SH3 domain, ankyrin repeat and PH domain containing proteins; ASAPs are Arf GTPase activating proteins (GAPs) and they function in regulating cell growth, migration, and invasion. They contain an N-terminal BAR domain, followed by a Pleckstrin homology (PH) domain, an Arf GAP domain, ankyrin (ANK) repeats, and a C-terminal SH3 domain. Vertebrates contain at least three members, ASAP1, ASAP2, and ASAP3, but some ASAP3 proteins do not seem to harbor a C-terminal SH3 domain. ASAP1 and ASAP2 show GTPase activating protein (GAP) activity towards Arf1 and Arf5. They do not show GAP activity towards Arf6, but are able to mediate Arf6 signaling by binding stably to GTP-Arf6. ASAP3 is an Arf6-specific GAP. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212755 [Multi-domain]  Cd Length: 53  Bit Score: 40.38  E-value: 1.77e-04
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gi 1720379035  746 ALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNE---DKEAWFPASF 792
Cdd:cd11821      4 ALYDCQADNDDELTFSEGEIIVVTGEEDDEWWEGHIEgdpSRRGVFPVSF 53
SH3_Tks4_2 cd12076
Second Src homology 3 domain of Tyrosine kinase substrate with four SH3 domains; Tks4, also ...
746-794 2.13e-04

Second Src homology 3 domain of Tyrosine kinase substrate with four SH3 domains; Tks4, also called SH3 and PX domain-containing protein 2B (SH3PXD2B) or HOFI, is a Src substrate and scaffolding protein that plays an important role in the formation of podosomes and invadopodia, the dynamic actin-rich structures that are related to cell migration and cancer cell invasion. It is required in the formation of functional podosomes, EGF-induced membrane ruffling, and lamellipodia generation. It plays an important role in cellular attachment and cell spreading. Tks4 is essential for the localization of MT1-MMP (membrane-type 1 matrix metalloproteinase) to invadopodia. It contains an N-terminal Phox homology (PX) domain and four SH3 domains. This model characterizes the second SH3 domain of Tks4. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 213009 [Multi-domain]  Cd Length: 54  Bit Score: 40.40  E-value: 2.13e-04
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                   ....*....|....*....|....*....|....*....|....*....
gi 1720379035  746 ALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFVR 794
Cdd:cd12076      5 VIYPYTARDQDEINLEKGAVVEVIQKNLEGWWKIRYQGKEGWAPASYLK 53
SH3_alphaPIX cd12060
Src Homology 3 domain of alpha-Pak Interactive eXchange factor; Alpha-PIX, also called Rho ...
754-794 2.32e-04

Src Homology 3 domain of alpha-Pak Interactive eXchange factor; Alpha-PIX, also called Rho guanine nucleotide exchange factor 6 (ARHGEF6) or Cool (Cloned out of Library)-2, activates small GTPases by exchanging bound GDP for free GTP. It acts as a GEF for both Cdc42 and Rac 1, and is localized in dendritic spines where it regulates spine morphogenesis. It controls dendritic length and spine density in the hippocampus. Mutations in the ARHGEF6 gene cause X-linked intellectual disability in humans. PIX proteins contain an N-terminal SH3 domain followed by RhoGEF (also called Dbl-homologous or DH) and Pleckstrin Homology (PH) domains, and a C-terminal leucine-zipper domain for dimerization. The SH3 domain of PIX binds to an atypical PxxxPR motif in p21-activated kinases (PAKs) with high affinity. The binding of PAKs to PIX facilitate the localization of PAKs to focal complexes and also localizes PAKs to PIX targets Cdc43 and Rac, leading to the activation of PAKs. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212993  Cd Length: 58  Bit Score: 40.37  E-value: 2.32e-04
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|.
gi 1720379035  754 DDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFVR 794
Cdd:cd12060     14 NEDELSVCKGDIIYVTRVEEGGWWEGTLNGKTGWFPSNYVR 54
SH3_Abi cd11826
Src homology 3 domain of Abl Interactor proteins; Abl interactor (Abi) proteins are adaptor ...
746-793 2.43e-04

Src homology 3 domain of Abl Interactor proteins; Abl interactor (Abi) proteins are adaptor proteins serving as binding partners and substrates of Abl tyrosine kinases. They are involved in regulating actin cytoskeletal reorganization and play important roles in membrane-ruffling, endocytosis, cell motility, and cell migration. They localize to sites of actin polymerization in epithelial adherens junction and immune synapses, as well as to the leading edge of lamellipodia. Vertebrates contain two Abi proteins, Abi1 and Abi2. Abi1 displays a wide expression pattern while Abi2 is highly expressed in the eye and brain. Abi proteins contain a homeobox homology domain, a proline-rich region, and a SH3 domain. The SH3 domain of Abi binds to a PxxP motif in Abl. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212760 [Multi-domain]  Cd Length: 52  Bit Score: 40.00  E-value: 2.43e-04
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*...
gi 1720379035  746 ALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFV 793
Cdd:cd11826      4 ALYDYTADKDDELSFQEGDIIYVTKKNDDGWYEGVLNGVTGLFPGNYV 51
SH3_VAV3_2 cd11978
C-terminal (or second) Src homology 3 domain of VAV3 protein; VAV3 is ubiquitously expressed ...
744-793 2.89e-04

C-terminal (or second) Src homology 3 domain of VAV3 protein; VAV3 is ubiquitously expressed and functions as a phosphorylation-dependent guanine nucleotide exchange factor (GEF) for RhoA, RhoG, and Rac1. It has been implicated to function in the hematopoietic, bone, cerebellar, and cardiovascular systems. VAV3 is essential in axon guidance in neurons that control blood pressure and respiration. It is overexpressed in prostate cancer cells and it plays a role in regulating androgen receptor transcriptional activity. VAV proteins contain several domains that enable their function: N-terminal calponin homology (CH), acidic, RhoGEF (also called Dbl-homologous or DH), Pleckstrin Homology (PH), C1 (zinc finger), SH2, and two SH3 domains. The SH3 domain of VAV is involved in the localization of proteins to specific sites within the cell, by interacting with proline-rich sequences within target proteins. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212911 [Multi-domain]  Cd Length: 56  Bit Score: 40.01  E-value: 2.89e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1720379035  744 AEALWDHVTMDDQELGFKAGDVIQV-LEASNKDWWWGRNEDKEAWFPASFV 793
Cdd:cd11978      3 AIARYDFCARDMRELSLLKGDVVKIyTKMSTNGWWRGEVNGRVGWFPSTYV 53
SH3_srGAP cd11809
Src homology 3 domain of Slit-Robo GTPase Activating Proteins; Slit-Robo GTPase Activating ...
744-795 3.17e-04

Src homology 3 domain of Slit-Robo GTPase Activating Proteins; Slit-Robo GTPase Activating Proteins (srGAPs) are Rho GAPs that interact with Robo1, the transmembrane receptor of Slit proteins. Slit proteins are secreted proteins that control axon guidance and the migration of neurons and leukocytes. Vertebrates contain three isoforms of srGAPs (srGAP1-3), all of which are expressed during embryonic and early development in the nervous system but with different localization and timing. A fourth member has also been reported (srGAP4, also called ARHGAP4). srGAPs contain an N-terminal F-BAR domain, a Rho GAP domain, and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212743 [Multi-domain]  Cd Length: 53  Bit Score: 39.69  E-value: 3.17e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1720379035  744 AEALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFVRL 795
Cdd:cd11809      2 ATAQFDYTGRSERELSFKKGDSLTLYRQVSDDWWRGQLNGQDGLVPHKYITL 53
SH3_BAIAP2L2 cd11914
Src Homology 3 domain of Brain-specific Angiogenesis Inhibitor 1-Associated Protein 2-Like 2; ...
758-794 3.33e-04

Src Homology 3 domain of Brain-specific Angiogenesis Inhibitor 1-Associated Protein 2-Like 2; BAIAP2L2 co-localizes with clathrin plaques but its function has not been determined. It contains an N-terminal IMD or Inverse-Bin/Amphiphysin/Rvs (I-BAR) domain, an SH3 domain, and a WASP homology 2 (WH2) actin-binding motif at the C-terminus. The related proteins, BAIAP2L1 and IRSp53, function as regulators of membrane dynamics and the actin cytoskeleton. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212847 [Multi-domain]  Cd Length: 59  Bit Score: 39.80  E-value: 3.33e-04
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|.
gi 1720379035  758 LGFKAGDVIQVL--EASNkDWWWGRNED--KEAWFPASFVR 794
Cdd:cd11914     18 LRFNRGDIITVLvpEARN-GWLYGKLEGssRQGWFPEAYVK 57
SH3_Cyk3p-like cd11889
Src Homology 3 domain of Cytokinesis protein 3 and similar proteins; Cytokinesis protein 3 ...
757-793 3.33e-04

Src Homology 3 domain of Cytokinesis protein 3 and similar proteins; Cytokinesis protein 3 (Cyk3 or Cyk3p) is a component of the actomyosin ring independent cytokinesis pathway in yeast. It interacts with Inn1 and facilitates its recruitment to the bud neck, thereby promoting cytokinesis. Cyk3p contains an N-terminal SH3 domain and a C-terminal transglutaminase-like domain. The Cyk3p SH3 domain binds to the C-terminal proline-rich region of Inn1. SH3 domains bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs; they play a role in the regulation of enzymes by intramolecular interactions, changing the subcellular localization of signal pathway components and mediate multiprotein complex assemblies.


Pssm-ID: 212822  Cd Length: 53  Bit Score: 39.79  E-value: 3.33e-04
                           10        20        30
                   ....*....|....*....|....*....|....*....
gi 1720379035  757 ELGFKAGDVIQVLEASNKDWWWGR--NEDKEAWFPASFV 793
Cdd:cd11889     15 DLGFLEGDLIEVLSIGDGSWWSGKlrRNGAEGIFPSNFV 53
SH3_Intersectin1_3 cd11991
Third Src homology 3 domain (or SH3C) of Intersectin-1; Intersectin-1 (ITSN1) is an adaptor ...
746-795 3.46e-04

Third Src homology 3 domain (or SH3C) of Intersectin-1; Intersectin-1 (ITSN1) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN1 localizes in membranous organelles, CCPs, the Golgi complex, and may be involved in the cell membrane trafficking system. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The third SH3 domain (or SH3C) of ITSN1 has been shown to bind many proteins including dynamin1/2, CIN85, c-Cbl, SHIP2, Reps1, synaptojanin-1, and WNK, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212924  Cd Length: 52  Bit Score: 39.58  E-value: 3.46e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1720379035  746 ALWDHVTMDDQELGFKAGDVIQVLEaSNKDWWWGRNEDKEAWFPASFVRL 795
Cdd:cd11991      4 AMYTYESNEQGDLTFQQGDVILVTK-KDGDWWTGTVGDKTGVFPSNYVRP 52
SH3_Endophilin_A cd11803
Src homology 3 domain of Endophilin-A; Endophilins play roles in synaptic vesicle formation, ...
743-793 4.18e-04

Src homology 3 domain of Endophilin-A; Endophilins play roles in synaptic vesicle formation, virus budding, mitochondrial morphology maintenance, receptor-mediated endocytosis inhibition, and endosomal sorting. They are classified into two types, A and B. Vertebrates contain three endophilin-A isoforms (A1, A2, and A3). Endophilin-A proteins are enriched in the brain and play multiple roles in receptor-mediated endocytosis. They tubulate membranes and regulate calcium influx into neurons to trigger the activation of the endocytic machinery. They are also involved in the sorting of plasma membrane proteins, actin filament assembly, and the uncoating of clathrin-coated vesicles for fusion with endosomes. Endophilins contain an N-terminal N-BAR domain (BAR domain with an additional N-terminal amphipathic helix), followed by a variable region containing proline clusters, and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212737 [Multi-domain]  Cd Length: 55  Bit Score: 39.55  E-value: 4.18e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1720379035  743 CAEALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFV 793
Cdd:cd11803      2 CCRALYDFEPENEGELGFKEGDIITLTNQIDENWYEGMVNGQSGFFPVNYV 52
SH3_MLK cd11876
Src Homology 3 domain of Mixed Lineage Kinases; MLKs are Serine/Threonine Kinases (STKs), ...
743-793 4.56e-04

Src Homology 3 domain of Mixed Lineage Kinases; MLKs are Serine/Threonine Kinases (STKs), catalyzing the transfer of the gamma-phosphoryl group from ATP to S/T residues on protein substrates. MLKs act as mitogen-activated protein kinase kinase kinases (MAP3Ks, MKKKs, MAPKKKs), which phosphorylate and activate MAPK kinases (MAPKKs or MKKs or MAP2Ks), which in turn phosphorylate and activate MAPKs during signaling cascades that are important in mediating cellular responses to extracellular signals. MLKs play roles in immunity and inflammation, as well as in cell death, proliferation, and cell cycle regulation. Mammals have four MLKs (MLK1-4), mostly conserved in vertebrates, which contain an SH3 domain, a catalytic kinase domain, a leucine zipper, a proline-rich region, and a CRIB domain that mediates binding to GTP-bound Cdc42 and Rac. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212809 [Multi-domain]  Cd Length: 58  Bit Score: 39.42  E-value: 4.56e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*.
gi 1720379035  743 CAEALWDHVTMDDQELGFKAGDVIQVLE-----ASNKDWWWGRNEDKEAWFPASFV 793
Cdd:cd11876      1 LWTALFDYDARGEDELTLRRGQPVEVLSkdaavSGDEGWWTGKIGDKVGIFPSNYV 56
SH3_CD2AP_3 cd12056
Third Src Homology 3 domain (SH3C) of CD2-associated protein; CD2AP, also called CMS (Cas ...
746-793 5.09e-04

Third Src Homology 3 domain (SH3C) of CD2-associated protein; CD2AP, also called CMS (Cas ligand with Multiple SH3 domains) or METS1 (Mesenchyme-to-Epithelium Transition protein with SH3 domains), is a cytosolic adaptor protein that plays a role in regulating the cytoskeleton. It is critical in cell-to-cell union necessary for kidney function. It also stabilizes the contact between a T cell and antigen-presenting cells. It is primarily expressed in podocytes at the cytoplasmic face of the slit diaphragm and serves as a linker anchoring podocin and nephrin to the actin cytoskeleton. CD2AP contains three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CD2AP to bind various protein partners and assemble complexes that have been implicated in many different functions. This alignment model represents the third SH3 domain (SH3C) of CD2AP. SH3C has been shown to bind ubiquitin. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212989 [Multi-domain]  Cd Length: 57  Bit Score: 39.42  E-value: 5.09e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1720379035  746 ALWDHVTMDDQELGFKAGDVIQVLEASNKD--WWWGRNEDKEAWFPASFV 793
Cdd:cd12056      6 ALFHYEGTNEDELDFKEGEIILIISKDTGEpgWWKGELNGKEGVFPDNFV 55
PH_Vav cd01223
Vav pleckstrin homology (PH) domain; Vav acts as a guanosine nucleotide exchange factor (GEF) ...
1052-1147 5.34e-04

Vav pleckstrin homology (PH) domain; Vav acts as a guanosine nucleotide exchange factor (GEF) for Rho/Rac proteins. They control processes including T cell activation, phagocytosis, and migration of cells. The Vav subgroup of Dbl GEFs consists of three family members (Vav1, Vav2, and Vav3) in mammals. Vav1 is preferentially expressed in the hematopoietic system, while Vav2 and Vav3 are described by broader expression patterns. Mammalian Vav proteins consist of a calponin homology (CH) domain, an acidic region, a catalytic Dbl homology (DH) domain, a PH domain, a zinc finger cysteine rich domain (C1/CRD), and an SH2 domain, flanked by two SH3 domains. In invertebrates such as Drosophila and C. elegans, Vav is missing the N-terminal SH3 domain. The DH domain is involved in RhoGTPase recognition and selectivity and stimulates the reorganization of the switch regions for GDP/GTP exchange. The PH domain is implicated in directing membrane localization, allosteric regulation of guanine nucleotide exchange activity, and as a phospholipid- dependent regulator of GEF activity. Vavs bind RhoGTPases including Rac1, RhoA, RhoG, and Cdc42, while other members of the GEF family are specific for a single RhoGTPase. This promiscuity is thought to be a result of its CRD. PH domains have diverse functions, but in general are involved in targeting proteins to the appropriate cellular location or in the interaction with a binding partner. They share little sequence conservation, but all have a common fold, which is electrostatically polarized. Less than 10% of PH domains bind phosphoinositide phosphates (PIPs) with high affinity and specificity. PH domains are distinguished from other PIP-binding domains by their specific high-affinity binding to PIPs with two vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which results in targeting some PH domain proteins to the plasma membrane. A few display strong specificity in lipid binding. Any specificity is usually determined by loop regions or insertions in the N-terminus of the domain, which are not conserved across all PH domains. PH domains are found in cellular signaling proteins such as serine/threonine kinase, tyrosine kinases, regulators of G-proteins, endocytotic GTPases, adaptors, as well as cytoskeletal associated molecules and in lipid associated enzymes.polarized. PH domains also have diverse functions. They are often involved in targeting proteins to the plasma membrane, but only a few (less than 10%) display strong specificity in binding inositol phosphates. Any specificity is usually determined by loop regions or insertions in the N-terminus of the domain, which are not conserved across all PH domains. PH domains are found in cellular signaling proteins such as serine/threonine kinases, tyrosine kinases, regulators of G-proteins, endocytotic GTPases, adaptors, cytoskeletal associated molecules, and in lipid associated enzymes.


Pssm-ID: 269930  Cd Length: 127  Bit Score: 41.08  E-value: 5.34e-04
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720379035 1052 GEL-TKITRQGKSQQRIFFLFDHQLVSCKKdlLRRDMLYYKGRMDMDEVELVD----VEDGRDKDWSlslrNAFKLVSKA 1126
Cdd:cd01223     23 GELkIKSHEDQKKKDRYAFLFDKVLLICKS--LRGDQYEYKEIINLSEYRIEDdpsrRTLKRDKRWS----YQFLLVHKQ 96
                           90       100
                   ....*....|....*....|.
gi 1720379035 1127 TDEVHLFCARKQEDKARWLQA 1147
Cdd:cd01223     97 GKTAYTLYAKTEELKKKWMEA 117
SH3_PLCgamma cd11825
Src homology 3 domain of Phospholipase C (PLC) gamma; PLC catalyzes the hydrolysis of ...
746-793 5.36e-04

Src homology 3 domain of Phospholipase C (PLC) gamma; PLC catalyzes the hydrolysis of phosphatidylinositol (4,5)-bisphosphate [PtdIns(4,5)P2] to produce Ins(1,4,5)P3 and diacylglycerol (DAG) in response to various receptors. Ins(1,4,5)P3 initiates the calcium signaling cascade while DAG functions as an activator of PKC. PLCgamma catalyzes this reaction in tyrosine kinase-dependent signaling pathways. It is activated and recruited to its substrate at the membrane. Vertebrates contain two forms of PLCgamma, PLCgamma1, which is widely expressed, and PLCgamma2, which is primarily found in haematopoietic cells. PLCgamma contains a Pleckstrin homology (PH) domain followed by an elongation factor (EF) domain, two catalytic regions of PLC domains that flank two tandem SH2 domains, followed by a SH3 domain and C2 domain. The SH3 domain of PLCgamma1 directly interacts with dynamin-1 and can serve as a guanine nucleotide exchange factor (GEF). It also interacts with Cbl, inhibiting its phosphorylation and activity. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212759 [Multi-domain]  Cd Length: 54  Bit Score: 39.24  E-value: 5.36e-04
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1720379035  746 ALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGR-NEDKEAWFPASFV 793
Cdd:cd11825      4 ALYDYRAQRPDELSFCKHAIITNVEKEDGGWWRGDyGGKKQKWFPANYV 52
SH3_Intersectin_1 cd11836
First Src homology 3 domain (or SH3A) of Intersectin; Intersectins (ITSNs) are adaptor ...
746-793 5.51e-04

First Src homology 3 domain (or SH3A) of Intersectin; Intersectins (ITSNs) are adaptor proteins that function in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. They are essential for initiating clathrin-coated pit formation. They bind to many proteins through their multidomain structure and facilitate the assembly of multimeric complexes. Vertebrates contain two ITSN proteins, ITSN1 and ITSN2, which exist in alternatively spliced short and long isoforms. The short isoforms contain two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoforms, in addition, contain RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. ITSN1 and ITSN2 are both widely expressed, with variations depending on tissue type and stage of development. The first SH3 domain (or SH3A) of ITSN1 has been shown to bind many proteins including Sos1, dynamin1/2, CIN85, c-Cbl, PI3K-C2, SHIP2, N-WASP, and CdGAP, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212770 [Multi-domain]  Cd Length: 55  Bit Score: 39.26  E-value: 5.51e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1720379035  746 ALWDHVTMDDQELGFKAGDVIQVLEASN--KDWWWGRNEDKEAWFPASFV 793
Cdd:cd11836      4 ALYAFEARNPDEISFQPGDIIQVDESQVaePGWLAGELKGKTGWFPANYV 53
SH3_CD2AP-like_3 cd11875
Third Src Homology 3 domain (SH3C) of CD2-associated protein and similar proteins; This ...
744-795 5.70e-04

Third Src Homology 3 domain (SH3C) of CD2-associated protein and similar proteins; This subfamily is composed of the third SH3 domain (SH3C) of CD2AP, CIN85 (Cbl-interacting protein of 85 kDa), and similar domains. CD2AP and CIN85 are adaptor proteins that bind to protein partners and assemble complexes that have been implicated in T cell activation, kidney function, and apoptosis of neuronal cells. They also associate with endocytic proteins, actin cytoskeleton components, and other adaptor proteins involved in receptor tyrosine kinase (RTK) signaling. CD2AP and the main isoform of CIN85 contain three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CD2AP and CIN85 to bind various protein partners and assemble complexes that have been implicated in many different functions. SH3C of both proteins have been shown to bind to ubiquitin. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212808 [Multi-domain]  Cd Length: 55  Bit Score: 39.26  E-value: 5.70e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1720379035  744 AEALWDHVTMDDQELGFKAGDVIQVL--EASNKDWWWGRNEDKEAWFPASFVRL 795
Cdd:cd11875      2 ARVLFDYEAENEDELTLREGDIVTILskDCEDKGWWKGELNGKRGVFPDNFVEP 55
SH3_SH3BP4 cd11757
Src Homology 3 domain of SH3 domain-binding protein 4; SH3 domain-binding protein 4 (SH3BP4) ...
746-794 5.97e-04

Src Homology 3 domain of SH3 domain-binding protein 4; SH3 domain-binding protein 4 (SH3BP4) is also called transferrin receptor trafficking protein (TTP). SH3BP4 is an endocytic accessory protein that interacts with endocytic proteins including clathrin and dynamin, and regulates the internalization of the transferrin receptor (TfR). SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212691  Cd Length: 52  Bit Score: 38.85  E-value: 5.97e-04
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1720379035  746 ALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFVR 794
Cdd:cd11757      4 AIKDYCPTNFTTLKFSKGDHLYVLDTSGGEWWYAHNTTEMGYIPSSYVQ 52
SH3_Sorbs2_1 cd11920
First Src Homology 3 domain of Sorbin and SH3 domain containing 2 (Sorbs2), also called ...
744-793 6.56e-04

First Src Homology 3 domain of Sorbin and SH3 domain containing 2 (Sorbs2), also called Arg-binding protein 2 (ArgBP2); Sorbs2 or ArgBP2 is an adaptor protein containing one sorbin homology (SoHo) and three SH3 domains. It regulates actin-dependent processes including cell adhesion, morphology, and migration. It is expressed in many tissues and is abundant in the heart. Like vinexin, it is found in focal adhesion where it interacts with vinculin and afadin. It also localizes in epithelial cell stress fibers and in cardiac muscle cell Z-discs. Sorbs2 has been implicated to play roles in the signaling of c-Arg, Akt, and Pyk2. Other interaction partners of Sorbs2 include c-Abl, flotillin, spectrin, dynamin 1/2, synaptojanin, PTP-PEST, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212853 [Multi-domain]  Cd Length: 55  Bit Score: 38.84  E-value: 6.56e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1720379035  744 AEALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFV 793
Cdd:cd11920      3 ARAVYDFKAQTSKELSFKKGDTVYILRKIDQNWYEGEHHGRVGIFPISYV 52
SH3_Yes cd12007
Src homology 3 domain of Yes Protein Tyrosine Kinase; Yes (or c-Yes) is a member of the Src ...
746-793 6.63e-04

Src homology 3 domain of Yes Protein Tyrosine Kinase; Yes (or c-Yes) is a member of the Src subfamily of proteins, which are cytoplasmic (or non-receptor) PTKs. c-Yes kinase is the cellular homolog of the oncogenic protein (v-Yes) encoded by the Yamaguchi 73 and Esh sarcoma viruses. It displays functional overlap with other Src subfamily members, particularly Src. It also shows some unique functions such as binding to occludins, transmembrane proteins that regulate extracellular interactions in tight junctions. Yes also associates with a number of proteins in different cell types that Src does not interact with, like JAK2 and gp130 in pre-adipocytes, and Pyk2 in treated pulmonary vein endothelial cells. Although the biological function of Yes remains unclear, it appears to have a role in regulating cell-cell interactions and vesicle trafficking in polarized cells. Src kinases contain an N-terminal SH4 domain with a myristoylation site, followed by SH3 and SH2 domains, a tyr kinase domain, and a regulatory C-terminal region containing a conserved tyr. They are activated by autophosphorylation at the tyr kinase domain, but are negatively regulated by phosphorylation at the C-terminal tyr by Csk (C-terminal Src Kinase). The SH3 domain of Src kinases contributes to substrate recruitment by binding adaptor proteins/substrates, and regulation of kinase activity through an intramolecular interaction. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212940 [Multi-domain]  Cd Length: 58  Bit Score: 38.86  E-value: 6.63e-04
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1720379035  746 ALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGR--NEDKEAWFPASFV 793
Cdd:cd12007      5 ALYDYEARTTEDLSFKKGERFQIINNTEGDWWEARsiATGKNGYIPSNYV 54
PHA03379 PHA03379
EBNA-3A; Provisional
198-430 6.72e-04

EBNA-3A; Provisional


Pssm-ID: 223066 [Multi-domain]  Cd Length: 935  Bit Score: 43.89  E-value: 6.72e-04
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720379035  198 PVPEPAVCEIQVRDPEPSRAvplPRRSKSIDSLSVLKSSFKRKSASNLTelQGDRQVPSRTLssfFTDPEKPGGSERRTR 277
Cdd:PHA03379   497 PVPAPAGPIVRPWEASLSQV---PGVAFAPVMPQPMPVEPVPVPTVALE--RPVCPAPPLIA---MQGPGETSGIVRVRE 568
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720379035  278 RW----------RSPIRAKDFDRVLRLvsnvKDAAWKREAPRSAAPGPGPGLGDENPLLAPRSKLHDDYSRRTSSSVEPD 347
Cdd:PHA03379   569 RWrpapwtpnppRSPSQMSVRDRLARL----RAEAQPYQASVEVQPPQLTQVSPQQPMEYPLEPEQQMFPGSPFSQVADV 644
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720379035  348 ARRGGSPCIPAPCTTAPYAAPephLDVDTAVFPLETKSaqplgndGPRASSPSPIPTD-----PEGLSQGSSEAHTGSQH 422
Cdd:PHA03379   645 MRAGGVPAMQPQYFDLPLQQP---ISQGAPLAPLRASM-------GPVPPVPATQPQYfdiplTEPINQGASAAHFLPQQ 714

                   ....*...
gi 1720379035  423 PFNPVQLP 430
Cdd:PHA03379   715 PMEGPLVP 722
SH3_BTK cd11906
Src Homology 3 domain of Bruton's tyrosine kinase; BTK is a cytoplasmic (or nonreceptor) tyr ...
746-793 6.75e-04

Src Homology 3 domain of Bruton's tyrosine kinase; BTK is a cytoplasmic (or nonreceptor) tyr kinase containing Src homology protein interaction domains (SH3, SH2) N-terminal to the catalytic tyr kinase domain. It also contains an N-terminal pleckstrin homology (PH) domain, which binds the products of PI3K and allows membrane recruitment and activation, and the Tec homology (TH) domain with proline-rich and zinc-binding regions. Btk is expressed in B-cells, and a variety of myeloid cells including mast cells, platelets, neutrophils, and dendrictic cells. It interacts with a variety of partners, from cytosolic proteins to nuclear transcription factors, suggesting a diversity of functions. Stimulation of a diverse array of cell surface receptors, including antigen engagement of the B-cell receptor (BCR), leads to PH-mediated membrane translocation of Btk and subsequent phosphorylation by Src kinase and activation. Btk plays an important role in the life cycle of B-cells including their development, differentiation, proliferation, survival, and apoptosis. Mutations in Btk cause the primary immunodeficiency disease, X-linked agammaglobulinaemia (XLA) in humans. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212839 [Multi-domain]  Cd Length: 55  Bit Score: 39.04  E-value: 6.75e-04
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gi 1720379035  746 ALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNED-KEAWFPASFV 793
Cdd:cd11906      5 ALYDYTPMNAQDLQLRKGEEYVILEESNLPWWRARDKNgREGYIPSNYV 53
SH3_Intersectin_3 cd11838
Third Src homology 3 domain (or SH3C) of Intersectin; Intersectins (ITSNs) are adaptor ...
746-795 6.92e-04

Third Src homology 3 domain (or SH3C) of Intersectin; Intersectins (ITSNs) are adaptor proteins that function in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. They are essential for initiating clathrin-coated pit formation. They bind to many proteins through their multidomain structure and facilitate the assembly of multimeric complexes. Vertebrates contain two ITSN proteins, ITSN1 and ITSN2, which exist in alternatively spliced short and long isoforms. The short isoforms contain two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoforms, in addition, contain RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. ITSN1 and ITSN2 are both widely expressed, with variations depending on tissue type and stage of development. The third SH3 domain (or SH3C) of ITSN1 has been shown to bind many proteins including dynamin1/2, CIN85, c-Cbl, SHIP2, Reps1, synaptojanin-1, and WNK, among others. The SH3C of ITSN2 has been shown to bind the K15 protein of Kaposi's sarcoma-associated herpesvirus. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212772 [Multi-domain]  Cd Length: 52  Bit Score: 38.93  E-value: 6.92e-04
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gi 1720379035  746 ALWDHVTMDDQELGFKAGDVIQVLEaSNKDWWWGRNEDKEAWFPASFVRL 795
Cdd:cd11838      4 ALYPYESNEPGDLTFNAGDVILVTK-KDGEWWTGTIGDRTGIFPSNYVRP 52
SH3_GRAF-like cd11882
Src Homology 3 domain of GTPase Regulator Associated with Focal adhesion kinase and similar ...
744-795 6.97e-04

Src Homology 3 domain of GTPase Regulator Associated with Focal adhesion kinase and similar proteins; This subfamily is composed of Rho GTPase activating proteins (GAPs) with similarity to GRAF. Members contain an N-terminal BAR domain, followed by a Pleckstrin homology (PH) domain, a Rho GAP domain, and a C-terminal SH3 domain. Although vertebrates harbor four Rho GAPs in the GRAF subfamily including GRAF, GRAF2, GRAF3, and Oligophrenin-1 (OPHN1), only three are included in this model. OPHN1 contains the BAR, PH and GAP domains, but not the C-terminal SH3 domain. GRAF and GRAF2 show GAP activity towards RhoA and Cdc42. GRAF influences Rho-mediated cytoskeletal rearrangements and binds focal adhesion kinase. GRAF2 regulates caspase-activated p21-activated protein kinase-2. The SH3 domain of GRAF and GRAF2 binds PKNbeta, a target of the small GTPase Rho. SH3 domains bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs; they play a role in the regulation of enzymes by intramolecular interactions, changing the subcellular localization of signal pathway components and mediate multiprotein complex assemblies.


Pssm-ID: 212815 [Multi-domain]  Cd Length: 54  Bit Score: 38.81  E-value: 6.97e-04
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gi 1720379035  744 AEALWDHVTMDDQELGFKAGDVIQVLEASNKD-WWWGRNEDKEAWFPASFVRL 795
Cdd:cd11882      2 ARALYACKAEDESELSFEPGQIITNVQPSDEPgWLEGTLNGRTGLIPENYVEF 54
PH_Phafin2-like cd01218
Phafin2 (also called EAPF, FLJ13187, ZFYVE18 or PLEKHF2) Pleckstrin Homology (PH) domain; ...
1048-1145 7.08e-04

Phafin2 (also called EAPF, FLJ13187, ZFYVE18 or PLEKHF2) Pleckstrin Homology (PH) domain; Phafin2 is differentially expressed in the liver cancer cell and regulates the structure and function of the endosomes through Rab5-dependent processes. Phafin2 modulates the cell's response to extracellular stimulation by modulating the receptor density on the cell surface. Phafin2 contains a PH domain and a FYVE domain. PH domains have diverse functions, but in general are involved in targeting proteins to the appropriate cellular location or in the interaction with a binding partner. They share little sequence conservation, but all have a common fold, which is electrostatically polarized. Less than 10% of PH domains bind phosphoinositide phosphates (PIPs) with high affinity and specificity. PH domains are distinguished from other PIP-binding domains by their specific high-affinity binding to PIPs with two vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which results in targeting some PH domain proteins to the plasma membrane. A few display strong specificity in lipid binding. Any specificity is usually determined by loop regions or insertions in the N-terminus of the domain, which are not conserved across all PH domains. PH domains are found in cellular signaling proteins such as serine/threonine kinase, tyrosine kinases, regulators of G-proteins, endocytotic GTPases, adaptors, as well as cytoskeletal associated molecules and in lipid associated enzymes.


Pssm-ID: 269927 [Multi-domain]  Cd Length: 123  Bit Score: 40.70  E-value: 7.08e-04
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gi 1720379035 1048 LIHSGELTKITRQgKSQQRIFFLFDHQLVSCKKDLLRRdmLYYKGR-MDMDEVELVDVEDgrdkdwSLSLRNAFKLVSkA 1126
Cdd:cd01218     30 LVGEGVLTKVCRK-KPKPRQFFLFNDILVYGSIVINKK--KYNKQRiIPLEDVKIEDLED------TGELKNGWQIIS-P 99
                           90
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gi 1720379035 1127 TDEVHLFcARKQEDKARWL 1145
Cdd:cd01218    100 KKSFVVY-AATATEKSEWM 117
SH3_ASAP1 cd11965
Src homology 3 domain of ArfGAP with SH3 domain, ankyrin repeat and PH domain containing ...
745-795 7.12e-04

Src homology 3 domain of ArfGAP with SH3 domain, ankyrin repeat and PH domain containing protein 1; ASAP1 is also called DDEF1 (Development and Differentiation Enhancing Factor 1), AMAP1, centaurin beta-4, or PAG2. an Arf GTPase activating protein (GAP) with activity towards Arf1 and Arf5 but not Arf6. However, it has been shown to bind GTP-Arf6 stably without GAP activity. It has been implicated in cell growth, migration, and survival, as well as in tumor invasion and malignancy. It binds paxillin and cortactin, two components of invadopodia which are essential for tumor invasiveness. It also binds focal adhesion kinase (FAK) and the SH2/SH3 adaptor CrkL. ASAP1 contains an N-terminal BAR domain, followed by a Pleckstrin homology (PH) domain, an Arf GAP domain, ankyrin (ANK) repeats, and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212898 [Multi-domain]  Cd Length: 57  Bit Score: 38.84  E-value: 7.12e-04
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gi 1720379035  745 EALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNE---DKEAWFPASFVRL 795
Cdd:cd11965      3 KTIYDCQADNDDELTFVEGEVIIVTGEEDQEWWIGHIEgqpERKGVFPVSFVHI 56
SH3_PLCgamma1 cd11970
Src homology 3 domain of Phospholipase C (PLC) gamma 1; PLCgamma1 is widely expressed and is ...
743-793 7.13e-04

Src homology 3 domain of Phospholipase C (PLC) gamma 1; PLCgamma1 is widely expressed and is essential in growth and development. It is activated by the TrkA receptor tyrosine kinase and functions as a key regulator of cell differentiation. It is also the predominant PLCgamma in T cells and is required for T cell and NK cell function. PLCs catalyze the hydrolysis of phosphatidylinositol (4,5)-bisphosphate [PtdIns(4,5)P2] to produce Ins(1,4,5)P3 and diacylglycerol (DAG). Ins(1,4,5)P3 initiates the calcium signaling cascade while DAG functions as an activator of PKC. PLCgamma contains a Pleckstrin homology (PH) domain followed by an elongation factor (EF) domain, two catalytic regions of PLC domains that flank two tandem SH2 domains, followed by a SH3 domain and C2 domain. The SH3 domain of PLCgamma1 directly interacts with dynamin-1 and can serve as a guanine nucleotide exchange factor (GEF). It also interacts with Cbl, inhibiting its phosphorylation and activity. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212903  Cd Length: 60  Bit Score: 38.82  E-value: 7.13e-04
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gi 1720379035  743 CA-EALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGR-NEDKEAWFPASFV 793
Cdd:cd11970      4 CAvKALFDYKAQREDELTFTKNAIIQNVEKQEGGWWRGDyGGKKQLWFPSNYV 56
SH3_srGAP4 cd11956
Src homology 3 domain of Slit-Robo GTPase Activating Protein 4; srGAP4, also called ARHGAP4, ...
741-779 7.23e-04

Src homology 3 domain of Slit-Robo GTPase Activating Protein 4; srGAP4, also called ARHGAP4, is highly expressed in hematopoietic cells and may play a role in lymphocyte differentiation. It is able to stimulate the GTPase activity of Rac1, Cdc42, and RhoA. In the nervous system, srGAP4 has been detected in differentiating neurites and may be involved in axon and dendritic growth. srGAPs are Rho GAPs that interact with Robo1, the transmembrane receptor of Slit proteins. Slit proteins are secreted proteins that control axon guidance and the migration of neurons and leukocytes. srGAPs contain an N-terminal F-BAR domain, a Rho GAP domain, and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212889 [Multi-domain]  Cd Length: 55  Bit Score: 38.67  E-value: 7.23e-04
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gi 1720379035  741 VVCAEALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWG 779
Cdd:cd11956      1 EVEAVACFDYTGRTAQELSFKRGDVLLLHSKASSDWWRG 39
SH3_Amphiphysin cd11790
Src Homology 3 domain of Amphiphysin and related domains; Amphiphysins function primarily in ...
744-794 8.88e-04

Src Homology 3 domain of Amphiphysin and related domains; Amphiphysins function primarily in endocytosis and other membrane remodeling events. They exist in several isoforms and mammals possess two amphiphysin proteins from distinct genes. Amphiphysin I proteins, enriched in the brain and nervous system, contain domains that bind clathrin, Adaptor Protein complex 2 (AP2), dynamin, and synaptojanin. They function in synaptic vesicle endocytosis. Human autoantibodies to amphiphysin I hinder GABAergic signaling and contribute to the pathogenesis of paraneoplastic stiff-person syndrome. Some amphiphysin II isoforms, also called Bridging integrator 1 (Bin1), are localized in many different tissues and may function in intracellular vesicle trafficking. In skeletal muscle, Bin1 plays a role in the organization and maintenance of the T-tubule network. Mutations in Bin1 are associated with autosomal recessive centronuclear myopathy. Amphiphysins contain an N-terminal BAR domain with an additional N-terminal amphipathic helix (an N-BAR), a variable central domain, and a C-terminal SH3 domain. The SH3 domain of amphiphysins bind proline-rich motifs present in binding partners such as dynamin, synaptojanin, and nsP3. It also belongs to a subset of SH3 domains that bind ubiquitin in a site that overlaps with the peptide binding site. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212724 [Multi-domain]  Cd Length: 64  Bit Score: 38.85  E-value: 8.88e-04
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gi 1720379035  744 AEALWDHVTMDDQELGFKAGDVIQVLEASNKD-----WWWGRNED--KEAWFPASFVR 794
Cdd:cd11790      5 VRATHDYTAEDTDELTFEKGDVILVIPFDDPEeqdegWLMGVKEStgCRGVFPENFTE 62
SH3_Intersectin2_3 cd11992
Third Src homology 3 domain (or SH3C) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor ...
746-794 9.94e-04

Third Src homology 3 domain (or SH3C) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN2 also functions as a specific GEF for Cdc42 activation in epithelial morphogenesis, and is required in mitotic spindle orientation. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The third SH3 domain (SH3C) of ITSN2 has been shown to bind the K15 protein of Kaposi's sarcoma-associated herpesvirus. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212925  Cd Length: 52  Bit Score: 38.45  E-value: 9.94e-04
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gi 1720379035  746 ALWDHVTMDDQELGFKAGDVIQVLEaSNKDWWWGRNEDKEAWFPASFVR 794
Cdd:cd11992      4 ALYPYSSSEPGDLTFNEGEEILVTQ-KDGEWWTGSIEDRTGIFPSNYVR 51
SH3_Myosin-I_fungi cd11858
Src homology 3 domain of Type I fungal Myosins; Type I myosins (myosin-I) are actin-dependent ...
744-793 1.14e-03

Src homology 3 domain of Type I fungal Myosins; Type I myosins (myosin-I) are actin-dependent motors in endocytic actin structures and actin patches. They play roles in membrane traffic in endocytic and secretory pathways, cell motility, and mechanosensing. Saccharomyces cerevisiae has two myosins-I, Myo3 and Myo5, which are involved in endocytosis and the polarization of the actin cytoskeleton. Myosin-I contains an N-terminal actin-activated ATPase, a phospholipid-binding TH1 (tail homology 1) domain, and a C-terminal extension which includes an F-actin-binding TH2 domain, an SH3 domain, and an acidic peptide that participates in activating the Arp2/3complex. The SH3 domain of myosin-I is required for myosin-I-induced actin polymerization. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212792 [Multi-domain]  Cd Length: 55  Bit Score: 38.14  E-value: 1.14e-03
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gi 1720379035  744 AEALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRN--EDKEAWFPASFV 793
Cdd:cd11858      2 YKALYDFAGSVANELSLKKDDIVYIVQKEDNGWWLAKKldESKEGWVPAAYL 53
SH3_FCHSD_2 cd11762
Second Src Homology 3 domain of FCH and double SH3 domains proteins; This group is composed of ...
744-793 1.18e-03

Second Src Homology 3 domain of FCH and double SH3 domains proteins; This group is composed of FCH and double SH3 domains protein 1 (FCHSD1) and FCHSD2. These proteins have a common domain structure consisting of an N-terminal F-BAR (FES-CIP4 Homology and Bin/Amphiphysin/Rvs), two SH3, and C-terminal proline-rich domains. They have only been characterized in silico and their functions remain unknown. This group also includes the insect protein, nervous wreck, which acts as a regulator of synaptic growth signaling. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212696 [Multi-domain]  Cd Length: 57  Bit Score: 38.15  E-value: 1.18e-03
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gi 1720379035  744 AEALWDHVTMDDQELGFKAGDVIQVLEASNKD----WWWGRNEDKEAWFPASFV 793
Cdd:cd11762      2 VRALYDYEAQSDEELSFPEGAIIRILRKDDNGvddgWWEGEFNGRVGVFPSLVV 55
SH3_CSK cd11769
Src Homology 3 domain of C-terminal Src kinase; CSK is a cytoplasmic (or nonreceptor) tyr ...
745-793 1.30e-03

Src Homology 3 domain of C-terminal Src kinase; CSK is a cytoplasmic (or nonreceptor) tyr kinase containing the Src homology domains, SH3 and SH2, N-terminal to the catalytic tyr kinase domain. They negatively regulate the activity of Src kinases that are anchored to the plasma membrane. To inhibit Src kinases, CSK is translocated to the membrane via binding to specific transmembrane proteins, G-proteins, or adaptor proteins near the membrane. CSK catalyzes the tyr phosphorylation of the regulatory C-terminal tail of Src kinases, resulting in their inactivation. It is expressed in a wide variety of tissues and plays a role, as a regulator of Src, in cell proliferation, survival, and differentiation, and consequently, in cancer development and progression. In addition, CSK also shows Src-independent functions. It is a critical component in G-protein signaling, and plays a role in cytoskeletal reorganization and cell migration. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212703 [Multi-domain]  Cd Length: 57  Bit Score: 38.05  E-value: 1.30e-03
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gi 1720379035  745 EALWDHVTMDDQELGFKAGDVIQVLEASnKD--WWWGRNED-KEAWFPASFV 793
Cdd:cd11769      5 IAKYNFNGASEEDLPFKKGDILTIVAVT-KDpnWYKAKNKDgREGMIPANYV 55
SH3_Irsp53 cd11915
Src Homology 3 domain of Insulin Receptor tyrosine kinase Substrate p53; IRSp53 is also known ...
745-795 1.32e-03

Src Homology 3 domain of Insulin Receptor tyrosine kinase Substrate p53; IRSp53 is also known as BAIAP2 (Brain-specific Angiogenesis Inhibitor 1-Associated Protein 2). It is a scaffolding protein that takes part in many signaling pathways including Cdc42-induced filopodia formation, Rac-mediated lamellipodia extension, and spine morphogenesis. IRSp53 exists as multiple splicing variants that differ mainly at the C-termini. One variant (T-form) is expressed exclusively in human breast cancer cells. The gene encoding IRSp53 is a putative susceptibility gene for Gilles de la Tourette syndrome. IRSp53 can also mediate the recruitment of effector proteins Tir and EspFu, which regulate host cell actin reorganization, to bacterial attachment sites. It contains an N-terminal IMD, a CRIB (Cdc42 and Rac interactive binding motif), an SH3 domain, and a WASP homology 2 (WH2) actin-binding motif at the C-terminus. The SH3 domain of IRSp53 has been shown to bind the proline-rich C-terminus of EspFu. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212848  Cd Length: 59  Bit Score: 38.07  E-value: 1.32e-03
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gi 1720379035  745 EALWDHVTMDDQEL-GFKAGDVIQVLEASNKD-WWWGRNEDKE--AWFPASFVRL 795
Cdd:cd11915      4 QAIFSHAAGDNSTLlSFKEGDYITLLVPEARDgWHYGECEKTKmrGWFPFSYTRV 58
SH3_DNMBP_N1 cd11794
First N-terminal Src homology 3 domain of Dynamin Binding Protein, also called Tuba; DNMBP or ...
744-793 1.45e-03

First N-terminal Src homology 3 domain of Dynamin Binding Protein, also called Tuba; DNMBP or Tuba is a cdc42-specific guanine nucleotide exchange factor (GEF) that contains four N-terminal SH3 domains, a central RhoGEF [or Dbl homology (DH)] domain followed by a Bin/Amphiphysin/Rvs (BAR) domain, and two C-terminal SH3 domains. It provides a functional link between dynamin and key regulatory proteins of the actin cytoskeleton. It plays an important role in regulating cell junction configuration. The four N-terminal SH3 domains of DNMBP binds the GTPase dynamin, which plays an important role in the fission of endocytic vesicles. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212728  Cd Length: 51  Bit Score: 37.88  E-value: 1.45e-03
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gi 1720379035  744 AEALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFV 793
Cdd:cd11794      2 VRAIFDFCPSVSEELPLFAGDVIEVLKVVDEFWLLGTKEGVTGQFPSSFV 51
SH3_DOCK2_A cd12050
Src Homology 3 domain of Class A Dedicator of Cytokinesis protein 2; Dock2 is a hematopoietic ...
746-796 1.52e-03

Src Homology 3 domain of Class A Dedicator of Cytokinesis protein 2; Dock2 is a hematopoietic cell-specific, class A DOCK and is an atypical guanine nucleotide exchange factor (GEF) that lacks the conventional Dbl homology (DH) domain. It plays an important role in lymphocyte migration and activation, T-cell differentiation, neutrophil chemotaxis, and type I interferon induction. All DOCKs contain two homology domains: the DHR-1 (Dock homology region-1), also called CZH1 (CED-5, Dock180, and MBC-zizimin homology 1), and DHR-2 (also called CZH2 or Docker). The DHR-1 domain binds phosphatidylinositol-3,4,5-triphosphate while DHR-2 contains the catalytic activity for Rac and/or Cdc42. Class A DOCKs also contain an SH3 domain at the N-terminal region and a PxxP motif at the C-terminus; they are specific GEFs for Rac. The SH3 domain of Dock2 binds to DHR-2 in an autoinhibitory manner; binding of the scaffold protein Elmo to the SH3 domain of Dock2 exposes the DHR-2 domain and promotes GEF activity. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212983  Cd Length: 56  Bit Score: 37.90  E-value: 1.52e-03
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gi 1720379035  746 ALWDHVTMDDQELGFKAGDVIQVLEaSNKDWWWG---RNEDKEAWFPASFVRLR 796
Cdd:cd12050      4 AIYNFKGSGVPQLSLQIGDVVHIQE-TCEDWYKGylvRHKDLQGIFPKSFIHIK 56
SH3_Fyn_Yrk cd12006
Src homology 3 domain of Fyn and Yrk Protein Tyrosine Kinases; Fyn and Yrk (Yes-related kinase) ...
745-793 1.54e-03

Src homology 3 domain of Fyn and Yrk Protein Tyrosine Kinases; Fyn and Yrk (Yes-related kinase) are members of the Src subfamily of proteins, which are cytoplasmic (or non-receptor) PTKs. Fyn, together with Lck, plays a critical role in T-cell signal transduction by phosphorylating ITAM (immunoreceptor tyr activation motif) sequences on T-cell receptors, ultimately leading to the proliferation and differentiation of T-cells. In addition, Fyn is involved in the myelination of neurons, and is implicated in Alzheimer's and Parkinson's diseases. Yrk has been detected only in chickens. It is primarily found in neuronal and epithelial cells and in macrophages. It may play a role in inflammation and in response to injury. Src kinases contain an N-terminal SH4 domain with a myristoylation site, followed by SH3 and SH2 domains, a tyr kinase domain, and a regulatory C-terminal region containing a conserved tyr. They are activated by autophosphorylation at the tyr kinase domain, but are negatively regulated by phosphorylation at the C-terminal tyr by Csk (C-terminal Src Kinase). The SH3 domain of Src kinases contributes to substrate recruitment by binding adaptor proteins/substrates, and regulation of kinase activity through an intramolecular interaction. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212939 [Multi-domain]  Cd Length: 56  Bit Score: 38.11  E-value: 1.54e-03
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                   ....*....|....*....|....*....|....*....|....*....|.
gi 1720379035  745 EALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRN--EDKEAWFPASFV 793
Cdd:cd12006      4 VALYDYEARTEDDLSFHKGEKFQILNSSEGDWWEARSltTGETGYIPSNYV 54
SH3_MLK4 cd12058
Src Homology 3 domain of Mixed Lineage Kinase 4; MLK4 is a Serine/Threonine Kinase (STK), ...
746-793 1.63e-03

Src Homology 3 domain of Mixed Lineage Kinase 4; MLK4 is a Serine/Threonine Kinase (STK), catalyzing the transfer of the gamma-phosphoryl group from ATP to S/T residues on protein substrates. MLKs act as mitogen-activated protein kinase kinase kinases (MAP3Ks, MKKKs, MAPKKKs), which phosphorylate and activate MAPK kinases (MAPKKs or MKKs or MAP2Ks), which in turn phosphorylate and activate MAPKs during signaling cascades that are important in mediating cellular responses to extracellular signals. MLKs play roles in immunity and inflammation, as well as in cell death, proliferation, and cell cycle regulation. The specific function of MLK4 is yet to be determined. Mutations in the kinase domain of MLK4 have been detected in colorectal cancers. MLK4 contains an SH3 domain, a catalytic kinase domain, a leucine zipper, a proline-rich region, and a CRIB domain that mediates binding to GTP-bound Cdc42 and Rac. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212991 [Multi-domain]  Cd Length: 58  Bit Score: 38.00  E-value: 1.63e-03
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gi 1720379035  746 ALWDHVTMDDQELGFKAGDVIQVLE-----ASNKDWWWGRNEDKEAWFPASFV 793
Cdd:cd12058      4 ALYDYEASGEDELSLRRGDVVEVLSqdaavSGDDGWWAGKIRHRLGIFPANYV 56
SH3_Sorbs1_3 cd11916
Third (or C-terminal) Src Homology 3 domain of Sorbin and SH3 domain containing 1 (Sorbs1), ...
745-795 1.71e-03

Third (or C-terminal) Src Homology 3 domain of Sorbin and SH3 domain containing 1 (Sorbs1), also called ponsin; Sorbs1 is also called ponsin, SH3P12, or CAP (c-Cbl associated protein). It is an adaptor protein containing one sorbin homology (SoHo) and three SH3 domains. It binds Cbl and plays a major role in regulating the insulin signaling pathway by enhancing insulin-induced phosphorylation of Cbl. Sorbs1, like vinexin, localizes at cell-ECM and cell-cell adhesion sites where it binds vinculin, paxillin, and afadin. It may function in the control of cell motility. Other interaction partners of Sorbs1 include c-Abl, Sos, flotillin, Grb4, ataxin-7, filamin C, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212849 [Multi-domain]  Cd Length: 59  Bit Score: 38.05  E-value: 1.71e-03
                           10        20        30        40        50
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gi 1720379035  745 EALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWG--RNEDKEAWFPASFVRL 795
Cdd:cd11916      5 QALYSYAPQNDDELELRDGDIVDVMEKCDDGWFVGtsRRTKQFGTFPGNYVKL 57
SH3_GRB2_N cd11946
N-terminal Src homology 3 domain of Growth factor receptor-bound protein 2; GRB2 is a critical ...
744-796 1.73e-03

N-terminal Src homology 3 domain of Growth factor receptor-bound protein 2; GRB2 is a critical signaling molecule that regulates the Ras pathway by linking tyrosine kinases to the Ras guanine nucleotide releasing protein Sos (son of sevenless), which converts Ras to the active GTP-bound state. It is ubiquitously expressed in all tissues throughout development and is important in cell cycle progression, motility, morphogenesis, and angiogenesis. In lymphocytes, GRB2 is associated with antigen receptor signaling components. GRB2 contains an N-terminal SH3 domain, a central SH2 domain, and a C-terminal SH3 domain. Its N-terminal SH3 domain binds to Sos and Sos-derived proline-rich peptides. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212879 [Multi-domain]  Cd Length: 56  Bit Score: 37.70  E-value: 1.73e-03
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gi 1720379035  744 AEALWDHVTMDDQELGFKAGDVIQVL-EASNKDWWWGRNEDKEAWFPASFVRLR 796
Cdd:cd11946      3 AIAKYDFKATADDELSFKRGDILKVLnEECDQNWYKAELNGKDGFIPKNYIEMK 56
SH3_NoxO1_2 cd12024
Second or C-terminal Src homology 3 domain of NADPH oxidase (Nox) Organizing protein 1; Nox ...
750-795 1.73e-03

Second or C-terminal Src homology 3 domain of NADPH oxidase (Nox) Organizing protein 1; Nox Organizing protein 1 (NoxO1) is a critical regulator of enzyme kinetics of the nonphagocytic NADPH oxidase Nox1, which catalyzes the transfer of electrons from NADPH to molecular oxygen to form superoxide. Nox1 is expressed in colon, stomach, uterus, prostate, and vascular smooth muscle cells. NoxO1 is involved in targeting activator subunits (such as NoxA1) to Nox1. It is co-localized with Nox1 in the membranes of resting cells and directs the subcellular localization of Nox1. NoxO1 contains an N-terminal Phox homology (PX) domain, tandem SH3 domains (N-SH3 and C-SH3), and a C-terminal proline-rich region (PRR). This model characterizes the second SH3 domain (or C-SH3) of NoxO1. The tandem SH3 domains of NoxO1 interact with the PRR of p22phox, which also complexes with Nox1. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212957  Cd Length: 53  Bit Score: 37.70  E-value: 1.73e-03
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gi 1720379035  750 HVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFVRL 795
Cdd:cd12024      8 YEAQKEDELSVPAGVVVEVLQKSDNGWWLIRYNGRAGYVPSMYLQP 53
SH3_CIN85_3 cd12057
Third Src Homology 3 domain (SH3C) of Cbl-interacting protein of 85 kDa; CIN85, also called ...
745-795 1.96e-03

Third Src Homology 3 domain (SH3C) of Cbl-interacting protein of 85 kDa; CIN85, also called SH3 domain-containing kinase-binding protein 1 (SH3KBP1) or CD2-binding protein 3 (CD2BP3) or Ruk, is an adaptor protein that is involved in the downregulation of receptor tyrosine kinases by facilitating endocytosis through interaction with endophilin-associated ubiquitin ligase Cbl proteins. It is also important in many other cellular processes including vesicle-mediated transport, cytoskeletal remodelling, apoptosis, cell adhesion and migration, and viral infection, among others. CIN85 exists as multiple variants from alternative splicing; the main variant contains three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CIN85 to bind various protein partners and assemble complexes that have been implicated in many different functions. This alignment model represents the third SH3 domain (SH3C) of CIN85. SH3C has been shown to bind ubiquitin. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212990 [Multi-domain]  Cd Length: 56  Bit Score: 37.57  E-value: 1.96e-03
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gi 1720379035  745 EALWDHVTMDDQELGFKAGDVIQVL--EASNKDWWWGRNEDKEAWFPASFVRL 795
Cdd:cd12057      3 KVLFPYEAQNEDELTIKEGDIVTLIskDCIDAGWWEGELNGRRGVFPDNFVKL 55
SH3_srGAP1-3 cd11955
Src homology 3 domain of Slit-Robo GTPase Activating Proteins 1, 2, and 3; srGAP1, also called ...
744-793 2.42e-03

Src homology 3 domain of Slit-Robo GTPase Activating Proteins 1, 2, and 3; srGAP1, also called Rho GTPase-Activating Protein 13 (ARHGAP13), is a Cdc42- and RhoA-specific GAP and is expressed later in the development of central nervous system tissues. srGAP2 is expressed in zones of neuronal differentiation. It plays a role in the regeneration of neurons and axons. srGAP3, also called MEGAP (MEntal disorder associated GTPase-Activating Protein), is a Rho GAP with activity towards Rac1 and Cdc42. It impacts cell migration by regulating actin and microtubule cytoskeletal dynamics. The association between srGAP3 haploinsufficiency and mental retardation is under debate. srGAPs are Rho GAPs that interact with Robo1, the transmembrane receptor of Slit proteins. Slit proteins are secreted proteins that control axon guidance and the migration of neurons and leukocytes. srGAPs contain an N-terminal F-BAR domain, a Rho GAP domain, and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212888 [Multi-domain]  Cd Length: 53  Bit Score: 37.23  E-value: 2.42e-03
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gi 1720379035  744 AEALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFV 793
Cdd:cd11955      2 AIAKFDYVGRSARELSFKKGASLLLYHRASDDWWEGRHNGIDGLVPHQYI 51
SH3_CIN85_1 cd12052
First Src Homology 3 domain (SH3A) of Cbl-interacting protein of 85 kDa; CIN85, also called ...
748-794 2.55e-03

First Src Homology 3 domain (SH3A) of Cbl-interacting protein of 85 kDa; CIN85, also called SH3 domain-containing kinase-binding protein 1 (SH3KBP1) or CD2-binding protein 3 (CD2BP3) or Ruk, is an adaptor protein that is involved in the downregulation of receptor tyrosine kinases by facilitating endocytosis through interaction with endophilin-associated ubiquitin ligase Cbl proteins. It is also important in many other cellular processes including vesicle-mediated transport, cytoskeletal remodelling, apoptosis, cell adhesion and migration, and viral infection, among others. CIN85 exists as multiple variants from alternative splicing; the main variant contains three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CIN85 to bind various protein partners and assemble complexes that have been implicated in many different functions. This alignment model represents the first SH3 domain (SH3A) of CIN85; SH3A binds to internal proline-rich motifs within the proline-rich region. This intramolecular interaction serves as a regulatory mechanism to keep CIN85 in a closed conformation, preventing the recruitment of other proteins. SH3A has also been shown to bind ubiquitin and to an atypical PXXXPR motif at the C-terminus of Cbl and the cytoplasmic end of the cell adhesion protein CD2. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212985 [Multi-domain]  Cd Length: 53  Bit Score: 37.18  E-value: 2.55e-03
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gi 1720379035  748 WDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFVR 794
Cdd:cd12052      6 FDYKAQHEDELTITVGDIITKIKKDDGGWWEGEIKGRRGLFPDNFVR 52
SH3_Nebulin_C cd11933
C-terminal Src Homology 3 domain of Nebulin; Nebulin is a giant filamentous protein (600-900 ...
745-793 2.73e-03

C-terminal Src Homology 3 domain of Nebulin; Nebulin is a giant filamentous protein (600-900 kD) that is expressed abundantly in skeletal muscle. It binds to actin thin filaments and regulates its assembly and function. Nebulin was thought to be part of a molecular ruler complex that is critical in determining the lengths of actin thin filaments in skeletal muscle since its length, which varies due to alternative splicing, correlates with the length of thin filaments in various muscle types. Recent studies indicate that nebulin regulates thin filament length by stabilizing the filaments and preventing depolymerization. Mutations in nebulin can cause nemaline myopathy, characterized by muscle weakness which can be severe and can lead to neonatal lethality. Nebulin contains an N-terminal LIM domain, many nebulin repeats/super repeats, and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212866 [Multi-domain]  Cd Length: 58  Bit Score: 37.29  E-value: 2.73e-03
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gi 1720379035  745 EALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWG--RNEDKEAWFPASFV 793
Cdd:cd11933      5 RAMYDYRAADDDEVSFKDGDTIVNVQTIDEGWMYGtvQRTGKTGMLPANYV 55
SH3_Nebulin_family_C cd11789
C-terminal Src Homology 3 domain of the Nebulin family of proteins; Nebulin family proteins ...
746-795 2.93e-03

C-terminal Src Homology 3 domain of the Nebulin family of proteins; Nebulin family proteins contain multiple nebulin repeats, and may contain an N-terminal LIM domain and/or a C-terminal SH3 domain. They have molecular weights ranging from 34 to 900 kD, depending on the number of nebulin repeats, and they all bind actin. They are involved in the regulation of actin filament architecture and function as stabilizers and scaffolds for cytoskeletal structures with which they associate, such as long actin filaments or focal adhesions. Nebulin family proteins that contain a C-terminal SH3 domain include the giant filamentous protein nebulin, nebulette, Lasp1, and Lasp2. Lasp2, also called LIM-nebulette, is an alternatively spliced variant of nebulette. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212723 [Multi-domain]  Cd Length: 55  Bit Score: 36.91  E-value: 2.93e-03
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gi 1720379035  746 ALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAW--FPASFVRL 795
Cdd:cd11789      4 AMYDYAAADDDEVSFQEGDVIINVEIIDDGWMEGTVQRTGQSgmLPANYVEL 55
SH3_GRB2_like_N cd11804
N-terminal Src homology 3 domain of Growth factor receptor-bound protein 2 (GRB2) and related ...
744-793 2.95e-03

N-terminal Src homology 3 domain of Growth factor receptor-bound protein 2 (GRB2) and related proteins; This family includes the adaptor protein GRB2 and related proteins including Drosophila melanogaster Downstream of receptor kinase (DRK), Caenorhabditis elegans Sex muscle abnormal protein 5 (Sem-5), GRB2-related adaptor protein (GRAP), GRAP2, and similar proteins. Family members contain an N-terminal SH3 domain, a central SH2 domain, and a C-terminal SH3 domain. GRB2/Sem-5/DRK is a critical signaling molecule that regulates the Ras pathway by linking tyrosine kinases to the Ras guanine nucleotide releasing protein Sos (son of sevenless), which converts Ras to the active GTP-bound state. GRAP2 plays an important role in T cell receptor (TCR) signaling by promoting the formation of the SLP-76:LAT complex, which couples the TCR to the Ras pathway. GRAP acts as a negative regulator of T cell receptor (TCR)-induced lymphocyte proliferation by downregulating the signaling to the Ras/ERK pathway. The N-terminal SH3 domain of GRB2 binds to Sos and Sos-derived proline-rich peptides. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212738 [Multi-domain]  Cd Length: 52  Bit Score: 36.95  E-value: 2.95e-03
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gi 1720379035  744 AEALWDHVTMDDQELGFKAGDVIQVL-EASNKDWWWGRNEDKEAWFPASFV 793
Cdd:cd11804      2 AVAKHDFKATAEDELSFKKGSILKVLnMEDDPNWYKAELDGKEGLIPKNYI 52
SH3_EFS cd12003
Src homology 3 domain of CAS (Crk-Associated Substrate) scaffolding protein family member, ...
742-795 3.42e-03

Src homology 3 domain of CAS (Crk-Associated Substrate) scaffolding protein family member, Embryonal Fyn-associated Substrate; EFS is also called HEFS, CASS3 (Cas scaffolding protein family member 3) or SIN (Src-interacting protein). It was identified based on interactions with the Src kinases, Fyn and Yes. It plays a role in thymocyte development and acts as a negative regulator of T cell proliferation. CAS proteins function as molecular scaffolds to regulate protein complexes that are involved in many cellular processes. They share a common domain structure that includes an N-terminal SH3 domain, an unstructured substrate domain that contains many YxxP motifs, a serine-rich four-helix bundle, and a FAT-like C-terminal domain. The SH3 domain of CAS proteins binds to diverse partners including FAK, FRNK, Pyk2, PTP-PEST, DOCK180, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212936  Cd Length: 62  Bit Score: 37.18  E-value: 3.42e-03
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gi 1720379035  742 VCAEALWDHVTMDDQELGFKAGDVIQVLE---ASNKDWWWGRNEDKEAWFPASFVRL 795
Cdd:cd12003      1 QLAKALYDNAAESPEELSFRRGDVLMVLKrehGSLPGWWLCSLHGQQGIAPANRLRL 57
SH3_MYO15 cd11884
Src Homology 3 domain of Myosin XV; This subfamily is composed of proteins with similarity to ...
746-793 3.79e-03

Src Homology 3 domain of Myosin XV; This subfamily is composed of proteins with similarity to Myosin XVa. Myosin XVa is an unconventional myosin that is critical for the normal growth of mechanosensory stereocilia of inner ear hair cells. Mutations in the myosin XVa gene are associated with nonsyndromic hearing loss. Myosin XVa contains a unique N-terminal extension followed by a motor domain, light chain-binding IQ motifs, and a tail consisting of a pair of MyTH4-FERM tandems separated by a SH3 domain, and a PDZ domain. SH3 domains bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs; they play a role in the regulation of enzymes by intramolecular interactions, changing the subcellular localization of signal pathway components and mediate multiprotein complex assemblies.


Pssm-ID: 212817 [Multi-domain]  Cd Length: 56  Bit Score: 36.92  E-value: 3.79e-03
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gi 1720379035  746 ALWDHVTMDDQELGFKAGDVIQVLEAS---NKDWWWGRNEDKEAWFPASFV 793
Cdd:cd11884      4 AVRAYITRDQTLLSFHKGDVIKLLPKEgplDPGWLFGTLDGRSGAFPKEYV 54
SH3_MLK1-3 cd12059
Src Homology 3 domain of Mixed Lineage Kinases 1, 2, and 3; MLKs 1, 2, and 3 are Serine ...
746-794 4.26e-03

Src Homology 3 domain of Mixed Lineage Kinases 1, 2, and 3; MLKs 1, 2, and 3 are Serine/Threonine Kinases (STKs), catalyzing the transfer of the gamma-phosphoryl group from ATP to S/T residues on protein substrates. MLKs act as mitogen-activated protein kinase kinase kinases (MAP3Ks, MKKKs, MAPKKKs), which phosphorylate and activate MAPK kinases (MAPKKs or MKKs or MAP2Ks), which in turn phosphorylate and activate MAPKs during signaling cascades that are important in mediating cellular responses to extracellular signals. MLKs play roles in immunity and inflammation, as well as in cell death, proliferation, and cell cycle regulation. Little is known about the specific function of MLK1, also called MAP3K9. It is capable of activating the c-Jun N-terminal kinase pathway. Mice lacking both MLK1 and MLK2 are viable, fertile, and have normal life spans. MLK2, also called MAP3K10, is abundant in brain, skeletal muscle, and testis. It functions upstream of the MAPK, c-Jun N-terminal kinase. It binds hippocalcin, a calcium-sensor protein that protects neurons against calcium-induced cell death. Both MLK2 and hippocalcin may be associated with the pathogenesis of Parkinson's disease. MLK3, also called MAP3K11, is highly expressed in breast cancer cells and its signaling through c-Jun N-terminal kinase has been implicated in the migration, invasion, and malignancy of cancer cells. It also functions as a negative regulator of Inhibitor of Nuclear Factor-KappaB Kinase (IKK) and thus, impacts inflammation and immunity. MLKs contain an SH3 domain, a catalytic kinase domain, a leucine zipper, a proline-rich region, and a CRIB domain that mediates binding to GTP-bound Cdc42 and Rac. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212992 [Multi-domain]  Cd Length: 58  Bit Score: 36.67  E-value: 4.26e-03
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gi 1720379035  746 ALWDHVTMDDQELGFKAGDVIQVLE-----ASNKDWWWGRNEDKEAWFPASFVR 794
Cdd:cd12059      4 AVFDYEASAEDELTLRRGDRVEVLSkdsavSGDEGWWTGKINDRVGIFPSNYVT 57
PH1_FGD1 cd01219
FYVE, RhoGEF and PH domain containing/faciogenital dysplasia protein 1, N-terminal Pleckstrin ...
1048-1147 4.26e-03

FYVE, RhoGEF and PH domain containing/faciogenital dysplasia protein 1, N-terminal Pleckstrin homology (PH) domain; In general, FGDs have a RhoGEF (DH) domain, followed by an N-terminal PH domain, a FYVE domain and a C-terminal PH domain. All FGDs are guanine nucleotide exchange factors that activates the Rho GTPase Cdc42, an important regulator of membrane trafficking. The RhoGEF domain is responsible for GEF catalytic activity, while the N-terminal PH domain is involved in intracellular targeting of the DH domain. Mutations in the FGD1 gene are responsible for the X-linked disorder known as faciogenital dysplasia (FGDY). Both FGD1 and FGD3 are targeted by the ubiquitin ligase SCF(FWD1/beta-TrCP) upon phosphorylation of two serine residues in its DSGIDS motif and subsequently degraded by the proteasome. However, FGD1 and FGD3 induced significantly different morphological changes in HeLa Tet-Off cells and while FGD1 induced long finger-like protrusions, FGD3 induced broad sheet-like protrusions when the level of GTP-bound Cdc42 was significantly increased by the inducible expression of FGD3. They also reciprocally regulated cell motility in inducibly expressed in HeLa Tet-Off cells, FGD1 stimulated cell migration while FGD3 inhibited it. FGD1 and FGD3 therefore play different roles to regulate cellular functions, even though their intracellular levels are tightly controlled by the same destruction pathway through SCF(FWD1/beta-TrCP). PH domains have diverse functions, but in general are involved in targeting proteins to the appropriate cellular location or in the interaction with a binding partner. They share little sequence conservation, but all have a common fold, which is electrostatically polarized. Less than 10% of PH domains bind phosphoinositide phosphates (PIPs) with high affinity and specificity. PH domains are distinguished from other PIP-binding domains by their specific high-affinity binding to PIPs with two vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which results in targeting some PH domain proteins to the plasma membrane. A few display strong specificity in lipid binding. Any specificity is usually determined by loop regions or insertions in the N-terminus of the domain, which are not conserved across all PH domains. PH domains are found in cellular signaling proteins such as serine/threonine kinase, tyrosine kinases, regulators of G-proteins, endocytotic GTPases, adaptors, as well as cytoskeletal associated molecules and in lipid associated enzymes.


Pssm-ID: 275392  Cd Length: 108  Bit Score: 38.08  E-value: 4.26e-03
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gi 1720379035 1048 LIHSGELTKIT-RQGKSQQRIFFLFDHQLVSCKKDL-LRRDMLYYKGRMDMDEVELVDVEdgrdkdwSLSLRNAFkLVSK 1125
Cdd:cd01219      1 LIKEGHILKLSaKNGTTQDRYLILFNDRLLYCVPKLrLIGQKFSVRARIDVEGMELKESS-------SLNLPRTF-LVSG 72
                           90       100
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gi 1720379035 1126 ATDEVHLfCARKQEDKARWLQA 1147
Cdd:cd01219     73 KQRSLEL-QARTEEEKKDWIQA 93
SH3_SH3RF1_1 cd11927
First Src Homology 3 domain of SH3 domain containing ring finger protein 1, an E3 ...
743-795 4.29e-03

First Src Homology 3 domain of SH3 domain containing ring finger protein 1, an E3 ubiquitin-protein ligase; SH3RF1 is also called POSH (Plenty of SH3s) or SH3MD2 (SH3 multiple domains protein 2). It is a scaffold protein that acts as an E3 ubiquitin-protein ligase. It plays a role in calcium homeostasis through the control of the ubiquitin domain protein Herp. It may also have a role in regulating death receptor mediated and JNK mediated apoptosis. SH3RF1 also enhances the ubiquitination of ROMK1 potassium channel resulting in its increased endocytosis. It contains an N-terminal RING finger domain and four SH3 domains. This model represents the first SH3 domain, located at the N-terminal half, of SH3RF1. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212860  Cd Length: 54  Bit Score: 36.47  E-value: 4.29e-03
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gi 1720379035  743 CAEALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFVRL 795
Cdd:cd11927      2 CAKALYNYEGKEPGDLKFSKGDIIILRRQVDENWYHGEVNGIHGFFPTNFVQI 54
SH3_Sla1p_2 cd11774
Second Src Homology 3 domain of the fungal endocytic adaptor protein Sla1p; Sla1p facilitates ...
744-793 4.30e-03

Second Src Homology 3 domain of the fungal endocytic adaptor protein Sla1p; Sla1p facilitates endocytosis by playing a role as an adaptor protein in coupling components of the actin cytoskeleton to the endocytic machinery. It interacts with Abp1p, Las17p and Pan1p, which are activator proteins of actin-related protein 2/3 (Arp2/3). Sla1p contains multiple domains including three SH3 domains, a SAM (sterile alpha motif) domain, and a Sla1 homology domain 1 (SHD1), which binds to the NPFXD motif that is found in many integral membrane proteins such as the Golgi-localized Arf-binding protein Lsb5p and the P4-ATPases, Drs2p and Dnf1p. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212708 [Multi-domain]  Cd Length: 52  Bit Score: 36.67  E-value: 4.30e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1720379035  744 AEALWDHVTMDDQELGFKAGDVIQVLEASNKDWWW-GRNEDKEAWFPASFV 793
Cdd:cd11774      2 AKALYDYDKQTEEELSFNEGDTLDVYDDSDSDWILvGFNGTQFGFVPANYI 52
SH3_VAV2_2 cd11977
C-terminal (or second) Src homology 3 domain of VAV2 protein; VAV2 is widely expressed and ...
744-793 4.33e-03

C-terminal (or second) Src homology 3 domain of VAV2 protein; VAV2 is widely expressed and functions as a guanine nucleotide exchange factor (GEF) for RhoA, RhoB and RhoG and also activates Rac1 and Cdc42. It is implicated in many cellular and physiological functions including blood pressure control, eye development, neurite outgrowth and branching, EGFR endocytosis and degradation, and cell cluster morphology, among others. It has been reported to associate with Nek3. VAV proteins contain several domains that enable their function: N-terminal calponin homology (CH), acidic, RhoGEF (also called Dbl-homologous or DH), Pleckstrin Homology (PH), C1 (zinc finger), SH2, and two SH3 domains. The SH3 domain of VAV is involved in the localization of proteins to specific sites within the cell, by interacting with proline-rich sequences within target proteins. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212910 [Multi-domain]  Cd Length: 58  Bit Score: 36.91  E-value: 4.33e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 1720379035  744 AEALWDHVTMDDQELGFKAGDVIQVLE--ASNKDWWWGRNEDKEAWFPASFV 793
Cdd:cd11977      3 AVARYNFAARDMRELSLREGDVVRIYSriGGDQGWWKGETNGRIGWFPSTYV 54
SH3_SKAP1-like cd11866
Src Homology 3 domain of Src Kinase-Associated Phosphoprotein 1 and similar proteins; This ...
746-793 4.65e-03

Src Homology 3 domain of Src Kinase-Associated Phosphoprotein 1 and similar proteins; This subfamily is composed of SKAP1, SKAP2, and similar proteins. SKAP1 and SKAP2 are immune cell-specific adaptor proteins that play roles in T- and B-cell adhesion, respectively, and are thus important in the migration of T- and B-cells to sites of inflammation and for movement during T-cell conjugation with antigen-presenting cells. Both SKAP1 and SKAP2 bind to ADAP (adhesion and degranulation-promoting adaptor protein), among many other binding partners. They contain a pleckstrin homology (PH) domain, a C-terminal SH3 domain, and several tyrosine phosphorylation sites. The SH3 domain of SKAP1 is necessary for its ability to regulate T-cell conjugation with antigen-presenting cells and the formation of LFA-1 clusters. SKAP1 binds primarily to a proline-rich region of ADAP through its SH3 domain; its degradation is regulated by ADAP. A secondary interaction occurs via the ADAP SH3 domain and the RKxxYxxY motif in SKAP1. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212800  Cd Length: 53  Bit Score: 36.64  E-value: 4.65e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1720379035  746 ALWDHVTMDDQELGFKAGDVIQVL--EASNKDWWWGRNEDKEAWFPASFV 793
Cdd:cd11866      4 GLWDCSGNEPDELSFKRGDLIYIIskEYDSFGWWVGELNGKVGLVPKDYL 53
SH3_PACSIN cd11843
Src homology 3 domain of Protein kinase C and Casein kinase Substrate in Neurons (PACSIN) ...
746-793 4.74e-03

Src homology 3 domain of Protein kinase C and Casein kinase Substrate in Neurons (PACSIN) proteins; PACSINs, also called Synaptic dynamin-associated proteins (Syndapins), act as regulators of cytoskeletal and membrane dynamics. They bind both dynamin and Wiskott-Aldrich syndrome protein (WASP), and may provide direct links between the actin cytoskeletal machinery through WASP and dynamin-dependent endocytosis. Vetebrates harbor three isoforms with distinct expression patterns and specific functions. PACSINs contain an N-terminal F-BAR domain and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212777 [Multi-domain]  Cd Length: 53  Bit Score: 36.24  E-value: 4.74e-03
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 1720379035  746 ALWDHVTMDDQELGFKAGDVIQVLEASNKDWWW-GRNEDKEAWFPASFV 793
Cdd:cd11843      4 ALYDYEGQESDELSFKAGDILTKLEEEDEQGWCkGRLDGRVGLYPANYV 52
SH3_Eve1_3 cd11816
Third Src homology 3 domain of ADAM-binding protein Eve-1; Eve-1, also called SH3 ...
743-793 5.43e-03

Third Src homology 3 domain of ADAM-binding protein Eve-1; Eve-1, also called SH3 domain-containing protein 19 (SH3D19) or EEN-binding protein (EBP), exists in multiple alternatively spliced isoforms. The longest isoform contains five SH3 domain in the C-terminal region and seven proline-rich motifs in the N-terminal region. It is abundantly expressed in skeletal muscle and heart, and may be involved in regulating the activity of ADAMs (A disintegrin and metalloproteases). Eve-1 interacts with EEN, an endophilin involved in endocytosis and may be the target of the MLL-EEN fusion protein that is implicated in leukemogenesis. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212750 [Multi-domain]  Cd Length: 51  Bit Score: 36.23  E-value: 5.43e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 1720379035  743 CAEALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFV 793
Cdd:cd11816      1 RCVARFDFEGEQEDELSFSEGDVITLKEYVGEEWAKGELNGKIGIFPLNFV 51
SH3_Sorbs_1 cd11781
First Src Homology 3 domain of Sorbin and SH3 domain containing (Sorbs) proteins and similar ...
744-793 6.35e-03

First Src Homology 3 domain of Sorbin and SH3 domain containing (Sorbs) proteins and similar domains; This family, also called the vinexin family, is composed predominantly of adaptor proteins containing one sorbin homology (SoHo) and three SH3 domains. Members include the first SH3 domains of Sorbs1 (or ponsin), Sorbs2 (or ArgBP2), Vinexin (or Sorbs3), and similar domains. They are involved in the regulation of cytoskeletal organization, cell adhesion, and growth factor signaling. Members of this family bind multiple partners including signaling molecules like c-Abl, c-Arg, Sos, and c-Cbl, as well as cytoskeletal molecules such as vinculin and afadin. They may have overlapping functions. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212715 [Multi-domain]  Cd Length: 53  Bit Score: 36.16  E-value: 6.35e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1720379035  744 AEALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFV 793
Cdd:cd11781      2 ARALYPFKAQSAKELSLKKGDIIYIRRQIDKNWYEGEHNGRVGIFPASYV 51
SH3_DOCK1_5_A cd12051
Src Homology 3 domain of Class A Dedicator of Cytokinesis proteins 1 and 5; Dock1, also called ...
744-796 6.77e-03

Src Homology 3 domain of Class A Dedicator of Cytokinesis proteins 1 and 5; Dock1, also called Dock180, and Dock5 are class A DOCKs and are atypical guanine nucleotide exchange factors (GEFs) that lack the conventional Dbl homology (DH) domain. Dock1 interacts with the scaffold protein Elmo and the resulting complex functions upstream of Rac in many biological events including phagocytosis of apoptotic cells, cell migration and invasion. Dock5 functions upstream of Rac1 to regulate osteoclast function. All DOCKs contain two homology domains: the DHR-1 (Dock homology region-1), also called CZH1 (CED-5, Dock180, and MBC-zizimin homology 1), and DHR-2 (also called CZH2 or Docker). The DHR-1 domain binds phosphatidylinositol-3,4,5-triphosphate while DHR-2 contains the catalytic activity for Rac and/or Cdc42. Class A DOCKs also contain an SH3 domain at the N-terminal region and a PxxP motif at the C-terminus; they are specific GEFs for Rac. The SH3 domain of Dock1 binds to DHR-2 in an autoinhibitory manner; binding of Elmo to the SH3 domain of Dock1 exposes the DHR-2 domain and promotes GEF activity. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212984 [Multi-domain]  Cd Length: 56  Bit Score: 35.95  E-value: 6.77e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*.
gi 1720379035  744 AEALWDHVTMDDQELGFKAGDVIQVLEaSNKDWWWG---RNEDKEAWFPASFVRLR 796
Cdd:cd12051      2 GVAIYNYDARGPDELSLQIGDTVHILE-TYEGWYRGytlRKKSKKGIFPASYIHLK 56
SH3_BCAR1 cd12001
Src homology 3 domain of the CAS (Crk-Associated Substrate) scaffolding protein family member, ...
742-778 6.99e-03

Src homology 3 domain of the CAS (Crk-Associated Substrate) scaffolding protein family member, Breast Cancer Anti-estrogen Resistance 1; BCAR1, also called p130cas or CASS1, is the founding member of the CAS family of scaffolding proteins and was originally identified through its ability to associate with Crk. The name BCAR1 was designated because the human gene was identified in a screen for genes that promote resistance to tamoxifen. It is widely expressed and its deletion is lethal in mice. It plays a role in regulating cell motility, survival, proliferation, transformation, cancer progression, and bacterial pathogenesis. CAS proteins function as molecular scaffolds to regulate protein complexes that are involved in many cellular processes. They share a common domain structure that includes an N-terminal SH3 domain, an unstructured substrate domain that contains many YxxP motifs, a serine-rich four-helix bundle, and a FAT-like C-terminal domain. The SH3 domain of CAS proteins binds to diverse partners including FAK, FRNK, Pyk2, PTP-PEST, DOCK180, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212934  Cd Length: 68  Bit Score: 36.56  E-value: 6.99e-03
                           10        20        30
                   ....*....|....*....|....*....|....*....
gi 1720379035  742 VCAEALWDHVTMDDQELGFKAGDVIQVLEASNK--DWWW 778
Cdd:cd12001      3 VLAKALYDNVAESPDELSFRKGDIMTVLERDTQglDGWW 41
SH3_NoxO1_1 cd12023
First or N-terminal Src homology 3 domain of Nox Organizing protein 1; Nox Organizing protein ...
752-795 7.23e-03

First or N-terminal Src homology 3 domain of Nox Organizing protein 1; Nox Organizing protein 1 (NoxO1) is a critical regulator of enzyme kinetics of the nonphagocytic NADPH oxidase Nox1, which catalyzes the transfer of electrons from NADPH to molecular oxygen to form superoxide. Nox1 is expressed in colon, stomach, uterus, prostate, and vascular smooth muscle cells. NoxO1 is involved in targeting activator subunits (such as NoxA1) to Nox1. It is co-localized with Nox1 in the membranes of resting cells and directs the subcellular localization of Nox1. NoxO1 contains an N-terminal Phox homology (PX) domain, tandem SH3 domains (N-SH3 and C-SH3), and a C-terminal proline-rich region (PRR). This model characterizes the first SH3 domain (or N-SH3) of NoxO1. The tandem SH3 domains of NoxO1 interact with the PRR of p22phox, which also complexes with Nox1. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212956  Cd Length: 56  Bit Score: 36.00  E-value: 7.23e-03
                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*..
gi 1720379035  752 TMDDQELGFKA--GDVIQVLEASNKDWWWGRNEDKE-AWFPASFVRL 795
Cdd:cd12023     10 TKDTKNKPFKAaaQESLDVLLKDPTGWWLVENEDRQiAWFPAPYLEE 56
SH3_Sorbs_2 cd11782
Second Src Homology 3 domain of Sorbin and SH3 domain containing (Sorbs) proteins and similar ...
744-793 7.45e-03

Second Src Homology 3 domain of Sorbin and SH3 domain containing (Sorbs) proteins and similar domains; This family, also called the vinexin family, is composed predominantly of adaptor proteins containing one sorbin homology (SoHo) and three SH3 domains. Members include the second SH3 domains of Sorbs1 (or ponsin), Sorbs2 (or ArgBP2), Vinexin (or Sorbs3), and similar domains. They are involved in the regulation of cytoskeletal organization, cell adhesion, and growth factor signaling. Members of this family bind multiple partners including signaling molecules like c-Abl, c-Arg, Sos, and c-Cbl, as well as cytoskeletal molecules such as vinculin and afadin. They may have overlapping functions. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212716 [Multi-domain]  Cd Length: 53  Bit Score: 35.79  E-value: 7.45e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1720379035  744 AEALWDHVTMDDQELGFKAGDVIQVLEASNKDWWWGRNEDKEAWFPASFV 793
Cdd:cd11782      2 ARAKYNFNADTGVELSFRKGDVITLTRRVDENWYEGRIGGRQGIFPVSYV 51
SH3_DOCK_AB cd11872
Src Homology 3 domain of Class A and B Dedicator of Cytokinesis proteins; DOCK proteins are ...
746-796 8.34e-03

Src Homology 3 domain of Class A and B Dedicator of Cytokinesis proteins; DOCK proteins are atypical guanine nucleotide exchange factors (GEFs) that lack the conventional Dbl homology (DH) domain. They are divided into four classes (A-D) based on sequence similarity and domain architecture: class A includes Dock1, 2 and 5; class B includes Dock3 and 4; class C includes Dock6, 7, and 8; and class D includes Dock9, 10 and 11. All DOCKs contain two homology domains: the DHR-1 (Dock homology region-1), also called CZH1 (CED-5, Dock180, and MBC-zizimin homology 1), and DHR-2 (also called CZH2 or Docker). The DHR-1 domain binds phosphatidylinositol-3,4,5-triphosphate while DHR-2 contains the catalytic activity for Rac and/or Cdc42. This subfamily includes only Class A and B DOCKs, which also contain an SH3 domain at the N-terminal region and a PxxP motif at the C-terminus. Class A/B DOCKs are mostly specific GEFs for Rac, except Dock4 which activates the Ras family GTPase Rap1, probably indirectly through interaction with Rap regulatory proteins. The SH3 domain of class A/B DOCKs have been shown to bind Elmo, a scaffold protein that promotes GEF activity of DOCKs by releasing DHR-2 autoinhibition by the intramolecular SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212805 [Multi-domain]  Cd Length: 56  Bit Score: 35.64  E-value: 8.34e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 1720379035  746 ALWDHVTMDDQELGFKAGDVIQVLEaSNKDWWWG---RNEDKEAWFPASFVRLR 796
Cdd:cd11872      4 AIYNFQGDGEHQLSLQVGDTVQILE-ECEGWYRGfslRNKSLKGIFPKSYVHIK 56
PH1_FGD2 cd13386
FYVE, RhoGEF and PH domain containing/faciogenital dysplasia protein 2, N-terminal Pleckstrin ...
1048-1150 9.14e-03

FYVE, RhoGEF and PH domain containing/faciogenital dysplasia protein 2, N-terminal Pleckstrin homology (PH) domain; In general, FGDs have a RhoGEF (DH) domain, followed by an N-terminal PH domain, a FYVE domain and a C-terminal PH domain. All FGDs are guanine nucleotide exchange factors that activates the Rho GTPase Cdc42, an important regulator of membrane trafficking. The RhoGEF domain is responsible for GEF catalytic activity, while the N-terminal PH domain is involved in intracellular targeting of the DH domain. Not much is known about FGD2. FGD1 is the best characterized member of the group with mutations here leading to the X-linked disorder known as faciogenital dysplasia (FGDY). PH domains have diverse functions, but in general are involved in targeting proteins to the appropriate cellular location or in the interaction with a binding partner. They share little sequence conservation, but all have a common fold, which is electrostatically polarized. Less than 10% of PH domains bind phosphoinositide phosphates (PIPs) with high affinity and specificity. PH domains are distinguished from other PIP-binding domains by their specific high-affinity binding to PIPs with two vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which results in targeting some PH domain proteins to the plasma membrane. A few display strong specificity in lipid binding. Any specificity is usually determined by loop regions or insertions in the N-terminus of the domain, which are not conserved across all PH domains. PH domains are found in cellular signaling proteins such as serine/threonine kinase, tyrosine kinases, regulators of G-proteins, endocytotic GTPases, adaptors, as well as cytoskeletal associated molecules and in lipid associated enzymes.


Pssm-ID: 275421  Cd Length: 108  Bit Score: 37.20  E-value: 9.14e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720379035 1048 LIHSGELTKI-TRQGKSQQRIFFLFDHQLVSC-KKDLLRRDMLYYKGRMDMDEV---ELVDVEdgrdkdwslsLRNAFkL 1122
Cdd:cd13386      1 LLKEGPVLKIsFRNNNPKERYLFLFNNMLLYCvPKVIQVGAKFQVHMRIDVDGMkvrELNDAE----------FPHSF-L 69
                           90       100
                   ....*....|....*....|....*...
gi 1720379035 1123 VSKATDEVHLfCARKQEDKARWLQAYAD 1150
Cdd:cd13386     70 VSGKQRTLEL-QARSQEEMEAWIQAFQE 96
PRK07003 PRK07003
DNA polymerase III subunit gamma/tau;
269-503 9.79e-03

DNA polymerase III subunit gamma/tau;


Pssm-ID: 235906 [Multi-domain]  Cd Length: 830  Bit Score: 40.22  E-value: 9.79e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720379035  269 PGGSERRTRRWRSPIRAKDFDRVLRlvSNVKDAAWKREAPRSAAPGPGPGLGDENPLLAPRSKLhddysrRTSSSVEPDA 348
Cdd:PRK07003   417 AAAATRAEAPPAAPAPPATADRGDD--AADGDAPVPAKANARASADSRCDERDAQPPADSGSAS------APASDAPPDA 488
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720379035  349 RRGGSPCIPAPCTTAPYAAPEPhldVDTAVFPLETKSAqPLGNDGPRASSPSPIPTDPEGLSQGSSEA---------HTG 419
Cdd:PRK07003   489 AFEPAPRAAAPSAATPAAVPDA---RAPAAASREDAPA-AAAPPAPEARPPTPAAAAPAARAGGAAAAldvlrnagmRVS 564
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1720379035  420 SQHPFNPVQLPTPL--RPTTPKPQSPQSPGSTKCPSSLSVLSLSSADSEERTEDASH-RQPGP----VSLQDTVLNAAGD 492
Cdd:PRK07003   565 SDRGARAAAAAKPAaaPAAAPKPAAPRVAVQVPTPRARAATGDAPPNGAARAEQAAEsRGAPPpwedIPPDDYVPLSADE 644
                          250
                   ....*....|.
gi 1720379035  493 VGGESGDSYFP 503
Cdd:PRK07003   645 GFGGPDDGFVP 655
 
Blast search parameters
Data Source: Precalculated data, version = cdd.v.3.21
Preset Options:Database: CDSEARCH/cdd   Low complexity filter: no  Composition Based Adjustment: yes   E-value threshold: 0.01

References:

  • Wang J et al. (2023), "The conserved domain database in 2023", Nucleic Acids Res.51(D)384-8.
  • Lu S et al. (2020), "The conserved domain database in 2020", Nucleic Acids Res.48(D)265-8.
  • Marchler-Bauer A et al. (2017), "CDD/SPARCLE: functional classification of proteins via subfamily domain architectures.", Nucleic Acids Res.45(D)200-3.
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