Leukocyte surface antigen CD47 is also known as Antigenic surface determinant protein OA3 Integrin-associated protein (IAP) and Protein MER6 CD47 contains 1 Ig-like V-type (immunoglobulin-like) domain CD47 is a 40 60 kDa variably glycosylated atypical member of the immunoglobulin superfamily and an integral membrane protein that consists of a 123 amino acid (aa) extracellular domain (ECD) with a single Ig-like domain five membrane-spanning regions with short intervening loops and a 34 aa C-terminal cytoplasmic tail CD47 has a role in both cell adhesion by acting as an adhesion receptor for THBS1 on platelets and in the modulation of integrins and plays an important role in memory formation and synaptic plasticity in the hippocampus by similarity CD47 is the receptor for SIRPA binding to which prevents maturation of immature dendritic cells and inhibits cytokine production by mature dendritic cells CD47 Interaction with SIRPG mediates cell-cell adhesion enhances superantigen-