bA77C3.1,CD172 antigen-like family member B,CD172g,CD172g antigen,signal-regulatory protein beta-2,signal-regulatory protein gamma,SIRP beta 2,SIRPB2,SIRP-B2,SIRPgamma,SIRP-gamma.
Probable immunoglobulin-like cell surface receptor. On binding with CD47, mediates cell-cell adhesion. Engagement on T-cells by CD47 on antigen-presenting cells results in enhanced antigen-specific T-cell proliferation and costimulates T-cell activation.