HGNC Approved Gene Symbol: SIRPB1
Cytogenetic location: 20p13 Genomic coordinates (GRCh38) : 20:1,561,385-1,620,009 (from NCBI)
Signaling through receptor tyrosine kinases (RTKs) regulates the growth of many cell types. The transmembrane protein SIRP-alpha-1 (602461) is a substrate of activated RTKs and binds to SH2 domains. Kharitonenkov et al. (1997) defined 2 subfamilies of SIRPs (signal regulatory proteins). Members of the SIRP-alpha subfamily have a cytoplasmic SHP2-binding domain; members of the SIRP-beta subfamily lack this cytoplasmic tail. Kharitonenkov et al. (1997) cloned 4 homologous SIRP genes. The SIRP-beta-1 gene encodes a 398-amino acid polypeptide which lacks the C-terminal SHP2-binding cytoplasmic domain.
Kharitonenkov, A., Chen, Z., Sures, I., Wang, H., Schilling, J., Ullrich, A. A family of proteins that inhibit signalling through tyrosine kinase receptors. Nature 386: 181-186, 1997. [PubMed: 9062191] [Full Text: https://doi.org/10.1038/386181a0]