SH2D3C

SH2 domain containing 3C, also known as SH2D3C, is a protein that in humans is encoded by the SH2D3C gene.^[5]

SH2D3C
Available structures PDB Ortholog search: PDBe RCSB List of PDB id codes 3T6G
Identifiers
Aliases	SH2D3C, Sh2d3c, Chat, Nsp3, Shep1, PRO34088, SH2 domain containing 3C
External IDs	OMIM: 604722; MGI: 1351631; HomoloGene: 69145; GeneCards: SH2D3C; OMA:SH2D3C - orthologs
Gene location (Human) Chr. Chromosome 9 (human)[1] Band 9q34.11 Start 127,738,317 bp[1] End 127,778,710 bp[1]
Gene location (Mouse) Chr. Chromosome 2 (mouse)[2] Band 2|2 B Start 32,611,067 bp[2] End 32,645,524 bp[2]
RNA expression pattern Bgee Human Mouse (ortholog) Top expressed in granulocyte right lung blood apex of heart upper lobe of left lung spleen monocyte lower lobe of lung left ventricle lymph node Top expressed in granulocyte zygote secondary oocyte right lung primary visual cortex neural tube internal carotid artery external carotid artery spleen tibiofemoral joint More reference expression data BioGPS n/a
Gene ontology Molecular function protein binding guanyl-nucleotide exchange factor activity Cellular component cytoplasm membrane Biological process small GTPase mediated signal transduction JNK cascade positive regulation of signal transduction positive regulation of peptidyl-serine phosphorylation Sources:Amigo / QuickGO
Orthologs Species Human Mouse Entrez 10044 27387 Ensembl ENSG00000095370 ENSMUSG00000059013 UniProt Q8N5H7 Q9QZS8 RefSeq (mRNA) NM_001142531 NM_001142532 NM_001142533 NM_001142534 NM_001252334 NM_005489 NM_170600 NM_001252547 NM_013781 RefSeq (protein) NP_001136003 NP_001136004 NP_001136005 NP_001136006 NP_001239263 NP_005480 NP_733745 NP_001239476 NP_038809 Location (UCSC) Chr 9: 127.74 – 127.78 Mb Chr 2: 32.61 – 32.65 Mb PubMed search [3] [4]
Wikidata
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Function

Sh2d3c is a gene on human chromosome 9 that encodes an SH2 domain containing protein known as NSP3. The mouse homologue is found on chromosome 2. The NSP (Novel SH2-containing Protein) family of proteins contains three members, NSP1, NSP2, and NSP3 (this protein), all of which have a similar architecture, with an N-terminal SH2 domain, a proline serine rich region, which contains consensus sequences for MAP kinase substrates, and a conserved C-terminus, which binds to the Cas family of adapter proteins, and also shows homology to GEF domains.

NSP3 was originally identified by three independent groups of researchers.^[6][7][8] The mouse homologue of NSP3 has been shown to have two distinct isoforms, generated by alternative splicing, that are expressed in different tissues. The shorter isoform, known as Chat (Cas/Hef1 associated signal transducer) is expressed in brain, lung, heart, kidney, muscle, liver, and intestine, while the larger isoform, known as Chat-H (the "H" is for Hematopoietic), is expressed in spleen, thymus, and lymph nodes.^[8] The two isoforms differ only in their N-terminus, which has been shown by one group to be important for membrane localization.^[9]

Through its interaction with Hef1, Chat-H, has been shown to be an important regulator of lymphocyte adhesion, acting upstream of Rap1 in the integrin activation pathway.^[9]