Entrez Summary: This gene encodes a receptor for the Fc portion of immunoglobulin G, and it is involved in the removal of antigen-antibody complexes from the circulation, as well as other other antibody-dependent responses. This gene (FCGR3A) is highly similar to another nearby gene (FCGR3B) located on chromosome 1. The receptor encoded by this gene is expressed on natural killer (NK) cells as an integral membrane glycoprotein anchored through a transmembrane peptide, whereas FCGR3B is expressed on polymorphonuclear neutrophils (PMN) where the receptor is anchored through a phosphatidylinositol (PI) linkage. Mutations in this gene have been linked to susceptibility to recurrent viral infections, susceptibility to systemic lupus erythematosus, and alloimmune neonatal neutropenia. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]. COMPLETENESS: complete on the 3' end.
UniProt Summary: Receptor for the Fc region of IgG. Binds complexed or aggregated IgG and also monomeric IgG. Mediates antibody-dependent cellular cytotoxicity (ADCC) and other antibody-dependent responses, such as phagocytosis. {ECO:0000269|PubMed:21768335, ECO:0000269|PubMed:22023369}.
Pfam DomainsGO Terms
Pfam Domains
No Pfam Domain information is available for this gene.
GO Terms
IgG binding
immune response-regulating cell surface receptor signaling pathway involved in phagocytosis
Fc-gamma receptor signaling pathway involved in phagocytosis
Fc receptor mediated stimulatory signaling pathway