Recombinant Human Signal-Regulatory Protein Alpha

Source : Escherichia Coli. SIRPA Human Recombinant produced in E.Coli is a single, non-glycosylated polypeptide chain containing 370 amino acids (27-373 a.a) and having a molecular mass of 40.4kDa. SIRPA is fused to a 23 amino acid His-tag at N-terminus & purified by proprietary chromatographic techniques. Signal-Regulatory Protein Alpha, SIRPA belongs to the signal-regulatory-protein (SIRP) family, as well as the immunoglobulin super family. The members of the SIRP family are receptor-type transmembrane glycoproteins which are involved in the negative regulation of receptor tyrosine kinase-coupled signaling processes. SIRPA can be phosphorylated by tyrosine kinases. The phospho-tyrosine residues of this PTP have been shown to recruit SH2 domain containing tyrosine phosphatases (PTP), and perform as substrates of PTPs. SIRPA take part in signal transduction mediated by a variety of growth factor receptors. CD47 has been shown to be a ligand for SIRPA.