Putative adhesion molecule that mediates sialic-acid dependent binding to cells. Preferentially binds to alpha-2,3- and alpha-2,6-linked sialic acid. Also binds disialogangliosides (disialogalactosyl globoside, disialyl lactotetraosylceramide and disialyl GalNAc lactotetraoslylceramide). The sialic acid recognition site may be masked by cis interactions with sialic acids on the same cell surface. In the immune response, may act as an inhibitory receptor upon ligand induced tyrosine phosphorylation by recruiting cytoplasmic phosphatase(s) via their SH2 domain(s) that block signal transduction through dephosphorylation of signaling molecules. Mediates inhibition of natural killer cells cytotoxicity. May play a role in hemopoiesis. Inhibits differentiation of CD34+ cell precursors towards myelomonocytic cell lineage and proliferation of leukemic myeloid cells (in vitro).
Protein Aliases: Adhesion inhibitory receptor molecule 1; adhesion inhibitory receptor molecule 1, siglec-7; AIRM-1; CD328; CDw328; D-siglec; p75; p75/ AIRM-1; QA79 membrane protein; sialic acid binding Ig-like lectin 7; sialic acid binding immunoglobulin-like lectin 7; Sialic acid-binding Ig-like lectin 7; Siglec; Siglec-7
Gene Aliases: AIRM1; CD328; CDw328; D-siglec; p75; p75/AIRM1; QA79; SIGLEC-7; SIGLEC19P; SIGLEC7; SIGLECP2
UniProt ID: (Human) Q9Y286
Entrez Gene ID: (Human) 27036
Molecular Function: immunoglobulin superfamily cell adhesion molecule