SIRPB1

The protein encoded by this gene is a member of the signal-regulatory-protein (SIRP) family, and also belongs to the immunoglobulin superfamily. SIRP family members are receptor-type transmembrane glycoproteins known to be involved in the negative regulation of receptor tyrosine kinase-coupled signaling processes. This protein was found to interact with TYROBP/DAP12, a protein bearing immunoreceptor tyrosine-based activation motifs. This protein was also reported to participate in the recruitment of tyrosine kinase SYK. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Feb 2009]

Signal Regulatory Protein Beta 1

Immunoglobulin-like cell surface receptor involved in the negative regulation of receptor tyrosine kinase-coupled signaling processes. Participates also in the recruitment of tyrosine kinase SYK. Triggers activation of myeloid cells when associated with TYROBP (PubMed:10604985).

Biological Process cell surface receptor signaling pathwayManual Assertion Based On ExperimentTAS:ProtInc
Biological Process positive regulation of phagocytosisManual Assertion Based On ExperimentIBA:GO_Central
Biological Process positive regulation of T cell activationManual Assertion Based On ExperimentIBA:GO_Central
Biological Process signal transductionManual Assertion Based On ExperimentTAS:ProtInc

Cell membrane

Extracellular: 30-371
Helical: 372-392
Cytoplasmic: 393-398

N-glycosylated.