MATH (meprin and TRAF-C homology) domain; an independent folding unit with an eight-stranded beta-sandwich structure found in meprins, TRAFs and other proteins. Meprins comprise a class of extracellular metalloproteases which are anchored to the membrane and are capable of cleaving growth factors, extracellular matrix proteins, and biologically active peptides. TRAF molecules serve as adapter proteins that link cell surface receptors of the Tumor Necrosis Factor and 1nterleukin-1/Toll-like families to downstream kinase cascades, which results in the activation of transcription factors and the regulation of cell survival, proliferation and stress responses in the immune and inflammatory systems. Other members include the ubiquitin ligases, TRIM37 and SPOP, and the ubiquitin-specific proteases, HAUSP and Ubp21p. A large number of uncharacterized members mostly from lineage-specific expansions in C. elegans and rice contain MATH and BTB domains, similar to SPOP. The MATH domain has been shown to bind peptide/protein substrates in TRAFs and HAUSP. It is possible that the MATH domain in other members of this superfamily also interacts with various protein substrates. The TRAF domain may also be involved in the trimerization of TRAFs. Based on homology, it is postulated that the MATH domain in meprins may be involved in its tetramer assembly and that the MATH domain, in general, may take part in diverse modular arrangements defined by adjacent multimerization domains.

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gi 1907137605 260 GTFLWKITNVTKRCHESVCGRTVSLFSP 287
Cdd:cd03779     1 GTFLWKITDVSQKQRESSHGRDVSLCSP 28

Tumor Necrosis Factor Receptor (TNFR) Associated Factor (TRAF) family, TRAF1 subfamily, TRAF domain, C-terminal MATH subdomain; TRAF molecules serve as adapter proteins that link TNFRs and downstream kinase cascades resulting in the activation of transcription factors and the regulation of cell survival, proliferation and stress responses. TRAF1 expression is the most restricted among the TRAFs. It is found exclusively in activated lymphocytes, dendritic cells and certain epithelia. TRAF1 associates, directly or indirectly through heterodimerization with TRAF2, with the TNFR family receptors TNFR-2, CD30, RANK, CD40 and LMP1, among others. It also binds the intracellular proteins TRADD, TANK, TRIP, RIP1, RIP2 and FLIP. TRAF1 is unique among the TRAFs in that it lacks a RING domain, which is critical for the activation of nuclear factor-kappaB and Jun NH2-terminal kinase. Studies on TRAF1-deficient mice suggest that TRAF1 has a negative regulatory role in TNFR-mediated signaling events. TRAF1 contains one zinc finger and one TRAF domain. The TRAF domain can be divided into a more divergent N-terminal alpha helical region (TRAF-N), and a highly conserved C-terminal MATH subdomain (TRAF-C) with an eight-stranded beta-sandwich structure. TRAF-N mediates trimerization while TRAF-C interacts with receptors.

                          10        20
                  ....*....|....*....|....*...
gi 1907137605 260 GTFLWKITNVTKRCHESVCGRTVSLFSP 287
Cdd:cd03779     1 GTFLWKITDVSQKQRESSHGRDVSLCSP 28

Tumor Necrosis Factor Receptor (TNFR) Associated Factor (TRAF) family, TRAF1 subfamily, TRAF domain, C-terminal MATH subdomain; TRAF molecules serve as adapter proteins that link TNFRs and downstream kinase cascades resulting in the activation of transcription factors and the regulation of cell survival, proliferation and stress responses. TRAF1 expression is the most restricted among the TRAFs. It is found exclusively in activated lymphocytes, dendritic cells and certain epithelia. TRAF1 associates, directly or indirectly through heterodimerization with TRAF2, with the TNFR family receptors TNFR-2, CD30, RANK, CD40 and LMP1, among others. It also binds the intracellular proteins TRADD, TANK, TRIP, RIP1, RIP2 and FLIP. TRAF1 is unique among the TRAFs in that it lacks a RING domain, which is critical for the activation of nuclear factor-kappaB and Jun NH2-terminal kinase. Studies on TRAF1-deficient mice suggest that TRAF1 has a negative regulatory role in TNFR-mediated signaling events. TRAF1 contains one zinc finger and one TRAF domain. The TRAF domain can be divided into a more divergent N-terminal alpha helical region (TRAF-N), and a highly conserved C-terminal MATH subdomain (TRAF-C) with an eight-stranded beta-sandwich structure. TRAF-N mediates trimerization while TRAF-C interacts with receptors.

                          10        20
                  ....*....|....*....|....*...
gi 1907137605 260 GTFLWKITNVTKRCHESVCGRTVSLFSP 287
Cdd:cd03779     1 GTFLWKITDVSQKQRESSHGRDVSLCSP 28

Tumor Necrosis Factor Receptor (TNFR) Associated Factor (TRAF) family, TRAF2 subfamily, TRAF domain; TRAF molecules serve as adapter proteins that link TNFRs and downstream kinase cascades resulting in the activation of transcription factors and the regulation of cell survival, proliferation and stress responses. TRAF2 associates with the receptors TNFR-1, TNFR-2, RANK (which mediates differentiation and maturation of osteoclasts) and CD40 (which is important for the proliferation and activation of B cells), among others. It regulates distinct pathways that lead to the activation of nuclear factor-kappaB and Jun NH2-terminal kinases. TRAF2 also indirectly associates with death receptors through its interaction with TRADD (TNFR-associated death domain protein). It is involved in regulating oxidative stress or ROS-induced cell death and in the preconditioning of cells by sublethal stress for protection from subsequent injury. TRAF2 contains a RING finger domain, five zinc finger domains, and a TRAF domain. The TRAF domain can be divided into a more divergent N-terminal alpha helical region (TRAF-N), and a highly conserved C-terminal MATH subdomain (TRAF-C) with an eight-stranded beta-sandwich structure. TRAF-N mediates trimerization while TRAF-C interacts with receptors.

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gi 1907137605 246 LEHSLRLMEEASFDGTFLWKITNVTKRCHESVCGRTVSLFSPGDSSSR 293
Cdd:cd03778     5 LEQKVLE*EASTYDGVFIWKISDFARKRQEAVAGRIPAIFSPAFYTSR 52

chromosome segregation protein SMC, common bacterial type; SMC (structural maintenance of chromosomes) proteins bind DNA and act in organizing and segregating chromosomes for partition. SMC proteins are found in bacteria, archaea, and eukaryotes. This family represents the SMC protein of most bacteria. The smc gene is often associated with scpB (TIGR00281) and scpA genes, where scp stands for segregation and condensation protein. SMC was shown (in Caulobacter crescentus) to be induced early in S phase but present and bound to DNA throughout the cell cycle. [Cellular processes, Cell division, DNA metabolism, Chromosome-associated proteins]

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                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1907137605  140 ELQLQAAVEATGDLEVDCYRAPccESQEELALQHLVKEKLLAQLEEKLRVFANIVAVLNKEVEASHLALAASIHQSQLDR 219
Cdd:TIGR02168  301 EQQKQILRERLANLERQLEELE--AQLEELESKLDELAEELAELEEKLEELKEELESLEAELEELEAELEELESRLEELE 378

                           90
                   ....*....|....*....
gi 1907137605  220 EHILSLEQRVVELQQTLAQ 238
Cdd:TIGR02168  379 EQLETLRSKVAQLELQIAS 397