alpha-protein kinase 2 isoform X3 [Trachypithecus francoisi]
Protein Classification
List of domain hits
| Name | Accession | Description | Interval | E-value | ||||
| Alpha_kinase_ALPK2 | cd16974 | Alpha-kinase domain of alpha-protein kinase 2; Alpha-protein kinase 2 (ALPK2) is also called ... |
1286-1524 | 3.81e-169 | ||||
Alpha-kinase domain of alpha-protein kinase 2; Alpha-protein kinase 2 (ALPK2) is also called heart alpha-protein kinase (HAK). Little functional information is known about ALPK2. In a three-dimensional colonic-crypt model, it has been identified as crucial for luminal apoptosis and expression of DNA repair-related genes, possibly in the transition of normal colonic crypt to adenoma. The ALPK2 gene may also be a novel candidate gene for inherited hypertension in Dahl rats. ALPK2 contains a C-terminal alpha-kinase domain and two immunoglobulin (Ig)-like domains. Alpha-kinase is an atypical protein kinase catalytic domain with no detectable similarity to conventional protein serine/threonine kinases. The alpha-kinase family was named after the unique mode of substrate recognition by its initial members, the Dictyostelium heavy chain kinases, which targeted protein sequences that adopt an alpha-helical conformation. More recently, alpha-kinases were found to also target residues in non-helical regions. : Pssm-ID: 341224 Cd Length: 239 Bit Score: 507.82 E-value: 3.81e-169
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| IG_like | smart00410 | Immunoglobulin like; IG domains that cannot be classified into one of IGv1, IGc1, IGc2, IG. |
1201-1273 | 2.26e-06 | ||||
Immunoglobulin like; IG domains that cannot be classified into one of IGv1, IGc1, IGc2, IG. : Pssm-ID: 214653 [Multi-domain] Cd Length: 85 Bit Score: 47.11 E-value: 2.26e-06
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| Name | Accession | Description | Interval | E-value | ||||
| Alpha_kinase_ALPK2 | cd16974 | Alpha-kinase domain of alpha-protein kinase 2; Alpha-protein kinase 2 (ALPK2) is also called ... |
1286-1524 | 3.81e-169 | ||||
Alpha-kinase domain of alpha-protein kinase 2; Alpha-protein kinase 2 (ALPK2) is also called heart alpha-protein kinase (HAK). Little functional information is known about ALPK2. In a three-dimensional colonic-crypt model, it has been identified as crucial for luminal apoptosis and expression of DNA repair-related genes, possibly in the transition of normal colonic crypt to adenoma. The ALPK2 gene may also be a novel candidate gene for inherited hypertension in Dahl rats. ALPK2 contains a C-terminal alpha-kinase domain and two immunoglobulin (Ig)-like domains. Alpha-kinase is an atypical protein kinase catalytic domain with no detectable similarity to conventional protein serine/threonine kinases. The alpha-kinase family was named after the unique mode of substrate recognition by its initial members, the Dictyostelium heavy chain kinases, which targeted protein sequences that adopt an alpha-helical conformation. More recently, alpha-kinases were found to also target residues in non-helical regions. Pssm-ID: 341224 Cd Length: 239 Bit Score: 507.82 E-value: 3.81e-169
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| Alpha_kinase | smart00811 | Alpha-kinase family; This family is a novel family of eukaryotic protein kinase catalytic ... |
1304-1524 | 3.53e-60 | ||||
Alpha-kinase family; This family is a novel family of eukaryotic protein kinase catalytic domains, which have no detectable similarity to conventional kinases. The family contains myosin heavy chain kinases and Elongation Factor-2 kinase and a bifunctional ion channel. This family is known as the alpha-kinase family. The structure of the kinase domain revealed unexpected similarity to eukaryotic protein kinases in the catalytic core as well as to metabolic enzymes with ATP-grasp domains. Pssm-ID: 214828 Cd Length: 198 Bit Score: 205.28 E-value: 3.53e-60
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| Alpha_kinase | pfam02816 | Alpha-kinase family; This family is a novel family of eukaryotic protein kinase catalytic ... |
1325-1524 | 5.87e-52 | ||||
Alpha-kinase family; This family is a novel family of eukaryotic protein kinase catalytic domains, which have no detectable similarity to conventional kinases. The family contains myosin heavy chain kinases and Elongation Factor-2 kinase and a bifunctional ion channel. This family is known as the alpha-kinase family. The structure of the kinase domain revealed unexpected similarity to eukaryotic protein kinases in the catalytic core as well as to metabolic enzymes with ATP-grasp domains. Pssm-ID: 460709 Cd Length: 185 Bit Score: 180.99 E-value: 5.87e-52
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| IG_like | smart00410 | Immunoglobulin like; IG domains that cannot be classified into one of IGv1, IGc1, IGc2, IG. |
1201-1273 | 2.26e-06 | ||||
Immunoglobulin like; IG domains that cannot be classified into one of IGv1, IGc1, IGc2, IG. Pssm-ID: 214653 [Multi-domain] Cd Length: 85 Bit Score: 47.11 E-value: 2.26e-06
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| I-set | pfam07679 | Immunoglobulin I-set domain; |
1203-1273 | 2.58e-04 | ||||
Immunoglobulin I-set domain; Pssm-ID: 400151 [Multi-domain] Cd Length: 90 Bit Score: 41.47 E-value: 2.58e-04
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| Ig2_PTK7 | cd05760 | Second immunoglobulin (Ig)-like domain of protein tyrosine kinase (PTK) 7; The members here ... |
1185-1273 | 4.23e-03 | ||||
Second immunoglobulin (Ig)-like domain of protein tyrosine kinase (PTK) 7; The members here are composed of the second immunoglobulin (Ig)-like domain in protein tyrosine kinase (PTK) 7, also known as CCK4. PTK7 is a subfamily of the receptor protein tyrosine kinase family, and is referred to as an RPTK-like molecule. RPTKs transduce extracellular signals across the cell membrane and play important roles in regulating cell proliferation, migration, and differentiation. PTK7 is organized as an extracellular portion having seven Ig-like domains, a single transmembrane region, and a cytoplasmic tyrosine kinase-like domain. PTK7 is considered a pseudokinase as it has several unusual residues in some of the highly conserved tyrosine kinase (TK) motifs; it is predicted to lack TK activity. PTK7 may function as a cell-adhesion molecule. PTK7 mRNA is expressed at high levels in placenta, melanocytes, liver, lung, pancreas, and kidney. PTK7 is overexpressed in several cancers, including melanoma and colon cancer lines. Pssm-ID: 409417 Cd Length: 95 Bit Score: 37.99 E-value: 4.23e-03
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| Name | Accession | Description | Interval | E-value | |||||
| Alpha_kinase_ALPK2 | cd16974 | Alpha-kinase domain of alpha-protein kinase 2; Alpha-protein kinase 2 (ALPK2) is also called ... |
1286-1524 | 3.81e-169 | |||||
Alpha-kinase domain of alpha-protein kinase 2; Alpha-protein kinase 2 (ALPK2) is also called heart alpha-protein kinase (HAK). Little functional information is known about ALPK2. In a three-dimensional colonic-crypt model, it has been identified as crucial for luminal apoptosis and expression of DNA repair-related genes, possibly in the transition of normal colonic crypt to adenoma. The ALPK2 gene may also be a novel candidate gene for inherited hypertension in Dahl rats. ALPK2 contains a C-terminal alpha-kinase domain and two immunoglobulin (Ig)-like domains. Alpha-kinase is an atypical protein kinase catalytic domain with no detectable similarity to conventional protein serine/threonine kinases. The alpha-kinase family was named after the unique mode of substrate recognition by its initial members, the Dictyostelium heavy chain kinases, which targeted protein sequences that adopt an alpha-helical conformation. More recently, alpha-kinases were found to also target residues in non-helical regions. Pssm-ID: 341224 Cd Length: 239 Bit Score: 507.82 E-value: 3.81e-169
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| Alpha_kinase_ALPK2_3 | cd16966 | Alpha-kinase domain of alpha-protein kinases 2 and 3; Alpha-protein kinases 2 (ALPK2) and 3 ... |
1286-1524 | 4.19e-155 | |||||
Alpha-kinase domain of alpha-protein kinases 2 and 3; Alpha-protein kinases 2 (ALPK2) and 3 (ALPK3) are also called heart alpha-protein kinase (HAK) and muscle alpha-protein kinase (MAK), respectively. They both contain a C-terminal alpha-kinase domain and two immunoglobulin (Ig)-like domains. Loss of function mutations in ALPK3 can cause early-onset and familial cardiomyopathy in humans. The ALPK2 gene may also be a novel candidate gene for inherited hypertension in Dahl rats. Alpha-kinase is an atypical protein kinase catalytic domain with no detectable similarity to conventional protein serine/threonine kinases. The alpha-kinase family was named after the unique mode of substrate recognition by its initial members, the Dictyostelium heavy chain kinases, which targeted protein sequences that adopt an alpha-helical conformation. More recently, alpha-kinases were found to also target residues in non-helical regions. Pssm-ID: 341216 Cd Length: 239 Bit Score: 470.52 E-value: 4.19e-155
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| Alpha_kinase_ALPK3 | cd16973 | Alpha-kinase domain of alpha-protein kinase 3; Alpha-protein kinase 3 (ALPK3) is also called ... |
1290-1524 | 1.03e-92 | |||||
Alpha-kinase domain of alpha-protein kinase 3; Alpha-protein kinase 3 (ALPK3) is also called muscle alpha-protein kinase (MAK) or myocytic induction/differentiation originator (Midori). Its expression is restricted to fetal and adult heart and adult skeletal muscle, and is localized in the nucleus. It is thought to act as a transcriptional regulator implicated in early cardiac development. Loss of function mutations in ALPK3 can cause early-onset and familial cardiomyopathy in humans. ALPK3 contains a C-terminal alpha-kinase domain and two immunoglobulin (Ig)-like domains. Alpha-kinase is an atypical protein kinase catalytic domain with no detectable similarity to conventional protein serine/threonine kinases. The alpha-kinase family was named after the unique mode of substrate recognition by its initial members, the Dictyostelium heavy chain kinases, which targeted protein sequences that adopt an alpha-helical conformation. More recently, alpha-kinases were found to also target residues in non-helical regions. Pssm-ID: 341223 Cd Length: 239 Bit Score: 299.75 E-value: 1.03e-92
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| Alpha_kinase | smart00811 | Alpha-kinase family; This family is a novel family of eukaryotic protein kinase catalytic ... |
1304-1524 | 3.53e-60 | |||||
Alpha-kinase family; This family is a novel family of eukaryotic protein kinase catalytic domains, which have no detectable similarity to conventional kinases. The family contains myosin heavy chain kinases and Elongation Factor-2 kinase and a bifunctional ion channel. This family is known as the alpha-kinase family. The structure of the kinase domain revealed unexpected similarity to eukaryotic protein kinases in the catalytic core as well as to metabolic enzymes with ATP-grasp domains. Pssm-ID: 214828 Cd Length: 198 Bit Score: 205.28 E-value: 3.53e-60
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| Alpha_kinase | pfam02816 | Alpha-kinase family; This family is a novel family of eukaryotic protein kinase catalytic ... |
1325-1524 | 5.87e-52 | |||||
Alpha-kinase family; This family is a novel family of eukaryotic protein kinase catalytic domains, which have no detectable similarity to conventional kinases. The family contains myosin heavy chain kinases and Elongation Factor-2 kinase and a bifunctional ion channel. This family is known as the alpha-kinase family. The structure of the kinase domain revealed unexpected similarity to eukaryotic protein kinases in the catalytic core as well as to metabolic enzymes with ATP-grasp domains. Pssm-ID: 460709 Cd Length: 185 Bit Score: 180.99 E-value: 5.87e-52
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| Alpha_kinase | cd04515 | Alpha kinase family; The alpha kinase family is a novel family of eukaryotic protein kinase ... |
1324-1524 | 8.36e-32 | |||||
Alpha kinase family; The alpha kinase family is a novel family of eukaryotic protein kinase catalytic domains, which have no detectable similarity to conventional serine/threonine protein kinases. The family contains myosin heavy chain kinases, elongation factor-2 kinases, and bifunctional ion channel kinases. These kinases are implicated in a large variety of cellular processes such as protein translation, Mg2+/Ca2+ homeostasis, intracellular transport, cell migration, adhesion, and proliferation. The alpha-kinase family was named after the unique mode of substrate recognition by its initial members, the Dictyostelium heavy chain kinases, which targeted protein sequences that adopt an alpha-helical conformation. More recently, alpha-kinases were found to also target residues in non-helical regions. Pssm-ID: 341214 Cd Length: 213 Bit Score: 124.43 E-value: 8.36e-32
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| Alpha_kinase_ChaK1_TRMP7 | cd16971 | Alpha-kinase domain of channel kinase 1, also called transient receptor potential cation ... |
1408-1525 | 2.63e-13 | |||||
Alpha-kinase domain of channel kinase 1, also called transient receptor potential cation channel subfamily M member 7; Channel kinase 1 (ChaK1), also called transient receptor potential cation channel subfamily M member 7 (TRMP7) or long transient receptor potential channel 7 (LTrpC7), is a fusion protein containing a transmembrane ion pore or channel and a C-terminal alpha-kinase domain, both of which are functional. It is ubiquitously expressed and is a cation-selective channel that preferentially permeates Zn2+, Mg2+, and Ca2+ ions. It is a central regulator of Mg2+ and Ca2+ homeostasis. TRPM7 plays a role in cancer proliferation, stroke, hydrogen peroxide dependent neurodegeneration, and heavy metal toxicity. Alpha-kinase is an atypical protein kinase catalytic domain with no detectable similarity to conventional protein serine/threonine kinases. The alpha-kinase family was named after the unique mode of substrate recognition by its initial members, the Dictyostelium heavy chain kinases, which targeted protein sequences that adopt an alpha-helical conformation. More recently, alpha-kinases were found to also target residues in non-helical regions. Pssm-ID: 341221 Cd Length: 239 Bit Score: 71.19 E-value: 2.63e-13
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| Alpha_kinase_ChaK | cd16965 | Alpha-kinase domain of channel kinases; This group is composed of channel kinases 1 (ChaK1) ... |
1408-1525 | 7.11e-13 | |||||
Alpha-kinase domain of channel kinases; This group is composed of channel kinases 1 (ChaK1) and 2 (ChaK2), and similar proteins. ChaK1 and ChaK2 are also called transient receptor potential cation channel subfamily M members 7 (TRMP7) and 6 (TRMP6), respectively. They are fusion proteins containing a transmembrane ion pore or channel and a C-terminal alpha-kinase domain, both of which are functional. They are both cation-selective channels that preferentially permeate Zn2+, Mg2+, and Ca2+ ions. They are central regulators of Mg2+ and Ca2+ homeostasis. TRMP7 is ubiquitously expressed while TRMP6 is highly expressed in specific tissues such as the kidney and intestine. Alpha-kinase is an atypical protein kinase catalytic domain with no detectable similarity to conventional protein serine/threonine kinases. The alpha-kinase family was named after the unique mode of substrate recognition by its initial members, the Dictyostelium heavy chain kinases, which targeted protein sequences that adopt an alpha-helical conformation. More recently, alpha-kinases were found to also target residues in non-helical regions. Pssm-ID: 341215 Cd Length: 239 Bit Score: 69.98 E-value: 7.11e-13
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| Alpha_kinase_ChaK2_TRPM6 | cd16972 | Alpha-kinase domain of channel kinase 2, also called transient receptor potential cation ... |
1408-1525 | 4.16e-12 | |||||
Alpha-kinase domain of channel kinase 2, also called transient receptor potential cation channel subfamily M member 6; Channel kinase 2 (ChaK2), also called transient receptor potential cation channel subfamily M member 6 (TRMP6) or melastatin-related TRP cation channel 6, is a fusion protein containing a transmembrane ion pore or channel and a C-terminal alpha-kinase domain, both of which are functional. It is highly expressed in the kidney and instestine. It is a cation-selective channel that preferentially permeates Zn2+, Mg2+, and Ca2+ ions. It is a central regulator of Mg2+ and Ca2+ homeostasis. TRPM6 is considered to be the Mg2+ entry pathway in the distal convoluted tubule of the kidney, where it functions as a gatekeeper for controlling the body's Mg2+ balance. Mutations in the TRPM6 gene cause the autosomal recessive disorder hypomagnesemia with secondary hypocalcemia, which often results in severe muscular and neurologic complications from early infancy that can lead to neurologic damage or cardiac arrest if left untreated. Alpha-kinase is an atypical protein kinase catalytic domain with no detectable similarity to conventional protein serine/threonine kinases. The alpha-kinase family was named after the unique mode of substrate recognition by its initial members, the Dictyostelium heavy chain kinases, which targeted protein sequences that adopt an alpha-helical conformation. More recently, alpha-kinases were found to also target residues in non-helical regions. Pssm-ID: 341222 Cd Length: 239 Bit Score: 67.72 E-value: 4.16e-12
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| Alpha_kinase_MHCK_like | cd16968 | Alpha-kinase domain of myosin heavy chain kinase and similar domains; This group is composed ... |
1320-1524 | 2.11e-11 | |||||
Alpha-kinase domain of myosin heavy chain kinase and similar domains; This group is composed of alpha-kinase domains of Dictyostelium discoideum myosin heavy chain kinases A-D (MHCKA, MHCKB, MHCKC, MHCKD), alpha-protein kinase 1 (AK1), and similar proteins. The myosin heavy chain kinases are involved in regulating myosin II filament assembly in Dictyostelium discoideum. They phosphorylate target threonine residues located in the carboxyl-terminal portion of the myosin II heavy chain (MHC) tail, resulting in filament disassembly. The different MHCK isoforms display different spatial regulation, indicating specific roles for each isoform in fine tuning the Dictyostelium actomyosin cytoskeleton. They all contain an alpha-kinase domain as well as WD40 repeats at the C-terminus. AK1 contains an N-terminal Arf-GAP domain and a central alpha-kinase domain. Alpha-kinase is an atypical protein kinase catalytic domain with no detectable similarity to conventional protein serine/threonine kinases. The alpha-kinase family was named after the unique mode of substrate recognition by its initial members, the Dictyostelium heavy chain kinases, which targeted protein sequences that adopt an alpha-helical conformation. More recently, alpha-kinases were found to also target residues in non-helical regions. Pssm-ID: 341218 Cd Length: 202 Bit Score: 64.94 E-value: 2.11e-11
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| Alpha_kinase | cd17508 | Alpha kinase family; uncharacterized subgroup; The alpha kinase family is a novel family of ... |
1300-1524 | 1.05e-10 | |||||
Alpha kinase family; uncharacterized subgroup; The alpha kinase family is a novel family of eukaryotic protein kinase catalytic domains, which have no detectable similarity to conventional serine/threonine protein kinases. The family contains myosin heavy chain kinases, elongation factor-2 kinases, and bifunctional ion channel kinases. These kinases are implicated in a large variety of cellular processes such as protein translation, Mg2+/Ca2+ homeostasis, intracellular transport, cell migration, adhesion, and proliferation. The alpha-kinase family was named after the unique mode of substrate recognition by its initial members, the Dictyostelium heavy chain kinases, which targeted protein sequences that adopt an alpha-helical conformation. More recently, alpha-kinases were found to also target residues in non-helical regions. Pssm-ID: 341225 Cd Length: 243 Bit Score: 63.55 E-value: 1.05e-10
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| Alpha_kinase_VwkA_like | cd16970 | Alpha-kinase domain of Dictyostelium discoideum VwkA and similar domains; Dictyostelium ... |
1425-1524 | 5.15e-09 | |||||
Alpha-kinase domain of Dictyostelium discoideum VwkA and similar domains; Dictyostelium discoideum alpha-protein kinase VwkA is also called von Willebrand factor A alpha-kinase or vWF kinase. It influences myosin II abundance and assembly behavior as vWKA gene disruption leads to significant myosin II overassembly. VwkA also serves a critical conserved role in the periodic contractions of the contractile vacuole through its regulation of the myosin II cortical cytoskeleton. It contains a vWFa domain (named after its homology to von Willebrand factor A, a plasma glycoprotein essential for proper blood clotting) and a C-terminal alpha-kinase domain. Alpha-kinase is an atypical protein kinase catalytic domain with no detectable similarity to conventional protein serine/threonine kinases. The alpha-kinase family was named after the unique mode of substrate recognition by its initial members, the Dictyostelium heavy chain kinases, which targeted protein sequences that adopt an alpha-helical conformation. More recently, alpha-kinases were found to also target residues in non-helical regions. Pssm-ID: 341220 Cd Length: 227 Bit Score: 58.51 E-value: 5.15e-09
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| Alpha_kinase_eEF2K | cd16967 | Alpha-kinase domain of eukaryotic elongation factor-2 kinase; Eukaryotic elongation factor-2 ... |
1324-1524 | 4.60e-08 | |||||
Alpha-kinase domain of eukaryotic elongation factor-2 kinase; Eukaryotic elongation factor-2 kinase (eEF2K) is also called calcium/calmodulin (CaM)-dependent eEF2K. It phosphorylates eukaryotic elongation factor-2 (EEF2) at a single site, leading to its inactivation and inability to bind ribosomes, and slowing down the elongation stage of protein synthesis. It has been linked to many human diseases including cardiovascular conditions (atherosclerosis) and pulmonary arterial hypertension, as well as solid tumors and neurological disorders. eEF2K is an atypical protein kinase containing a CaM binding region, an alpha-kinase catalytic domain, and TPR-like Sel1 repeats at the C-terminus. Alpha-kinase is an atypical protein kinase catalytic domain with no detectable similarity to conventional protein serine/threonine kinases. The alpha-kinase family was named after the unique mode of substrate recognition by its initial members, the Dictyostelium heavy chain kinases, which targeted protein sequences that adopt an alpha-helical conformation. More recently, alpha-kinases were found to also target residues in non-helical regions. Pssm-ID: 341217 Cd Length: 216 Bit Score: 55.41 E-value: 4.60e-08
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| IG_like | smart00410 | Immunoglobulin like; IG domains that cannot be classified into one of IGv1, IGc1, IGc2, IG. |
1201-1273 | 2.26e-06 | |||||
Immunoglobulin like; IG domains that cannot be classified into one of IGv1, IGc1, IGc2, IG. Pssm-ID: 214653 [Multi-domain] Cd Length: 85 Bit Score: 47.11 E-value: 2.26e-06
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| I-set | pfam07679 | Immunoglobulin I-set domain; |
1203-1273 | 2.58e-04 | |||||
Immunoglobulin I-set domain; Pssm-ID: 400151 [Multi-domain] Cd Length: 90 Bit Score: 41.47 E-value: 2.58e-04
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| Alpha_kinase | cd17509 | Alpha kinase family; uncharacterized subgroup; The alpha kinase family is a novel family of ... |
1463-1524 | 3.63e-03 | |||||
Alpha kinase family; uncharacterized subgroup; The alpha kinase family is a novel family of eukaryotic protein kinase catalytic domains, which have no detectable similarity to conventional serine/threonine protein kinases. The family contains myosin heavy chain kinases, elongation factor-2 kinases, and bifunctional ion channel kinases. These kinases are implicated in a large variety of cellular processes such as protein translation, Mg2+/Ca2+ homeostasis, intracellular transport, cell migration, adhesion, and proliferation. The alpha-kinase family was named after the unique mode of substrate recognition by its initial members, the Dictyostelium heavy chain kinases, which targeted protein sequences that adopt an alpha-helical conformation. More recently, alpha-kinases were found to also target residues in non-helical regions. Pssm-ID: 341226 Cd Length: 221 Bit Score: 40.79 E-value: 3.63e-03
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| Ig2_PTK7 | cd05760 | Second immunoglobulin (Ig)-like domain of protein tyrosine kinase (PTK) 7; The members here ... |
1185-1273 | 4.23e-03 | |||||
Second immunoglobulin (Ig)-like domain of protein tyrosine kinase (PTK) 7; The members here are composed of the second immunoglobulin (Ig)-like domain in protein tyrosine kinase (PTK) 7, also known as CCK4. PTK7 is a subfamily of the receptor protein tyrosine kinase family, and is referred to as an RPTK-like molecule. RPTKs transduce extracellular signals across the cell membrane and play important roles in regulating cell proliferation, migration, and differentiation. PTK7 is organized as an extracellular portion having seven Ig-like domains, a single transmembrane region, and a cytoplasmic tyrosine kinase-like domain. PTK7 is considered a pseudokinase as it has several unusual residues in some of the highly conserved tyrosine kinase (TK) motifs; it is predicted to lack TK activity. PTK7 may function as a cell-adhesion molecule. PTK7 mRNA is expressed at high levels in placenta, melanocytes, liver, lung, pancreas, and kidney. PTK7 is overexpressed in several cancers, including melanoma and colon cancer lines. Pssm-ID: 409417 Cd Length: 95 Bit Score: 37.99 E-value: 4.23e-03
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| Ig | cd00096 | Immunoglobulin domain; The members here are composed of the immunoglobulin (Ig) domain found ... |
1203-1268 | 5.39e-03 | |||||
Immunoglobulin domain; The members here are composed of the immunoglobulin (Ig) domain found in the Ig superfamily. The Ig superfamily is a heterogenous group of proteins, built on a common fold comprised of a sandwich of two beta sheets. Members of this group are components of immunoglobulin, neuroglia, cell surface glycoproteins, including T-cell receptors, CD2, CD4, CD8, and membrane glycoproteins, including butyrophilin and chondroitin sulfate proteoglycan core protein. A predominant feature of most Ig domains is a disulfide bridge connecting the two beta-sheets with a tryptophan residue packed against the disulfide bond. Ig superfamily (IgSF) domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. Typically, the V-set domains have A, B, E, and D strands in one sheet and A', G, F, C, C' and C" in the other. The structures in C1-set are smaller than those in the V-set; they have one beta sheet that is formed by strands A, B, E, and D and the other by strands G, F, C, and C'. Moreover, a C1-set Ig domain contains a short C' strand (three residues) and lacks A' and C" strand. Unlike other Ig domain sets, C2-set structures do not have a D strand. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lack a C" strand. Pssm-ID: 409353 [Multi-domain] Cd Length: 70 Bit Score: 37.31 E-value: 5.39e-03
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