Enables immunoglobulin receptor binding activity. Involved in several processes, including regulation of Fc-gamma receptor signaling pathway involved in phagocytosis; regulation of antibody-dependent cellular cytotoxicity; and regulation of tumor necrosis factor production. Located in cell surface. Used to study crescentic glomerulonephritis. Human ortholog(s) of this gene implicated in several diseases, including autoimmune disease (multiple); dengue disease (multiple); hematologic cancer (multiple); leukopenia (multiple); and malaria (multiple). Orthologous to human FCGR2A (Fc fragment of IgG receptor IIa). [provided by Alliance of Genome Resources, Apr 2022]