Signal-Regulatory Protein Beta-1

**Semantic type:** Amino Acid, Peptide, or Protein|Immunologic Factor|Receptor

**Definition:** Signal-regulatory protein beta-1 (398 aa, ~43 kDa) is encoded by the human SIRPB1 gene. This protein is involved in the negative regulation of receptor tyrosine kinase signaling.

**Synonyms:** - CD172 Antigen-Like Family Member B - CD172b Antigen - SIRP Beta 1 - SIRP-Beta-1 - SIRPB1 - Signal-Regulatory Protein Beta 1