FCGR2B CD32 FCG2 IGFR2 Low affinity immunoglobulin gamma Fc region receptor II-b CDw32
Molecular Weight(MW)
34044 Da
Function
Receptor for the Fc region of complexed or aggregated immunoglobulins gamma. Low affinity receptor. Involved in a variety of effector and regulatory functions such as phagocytosis of immune complexes and modulation of antibody production by B- cells. Binding to this receptor results in down-modulation of previous state of cell activation triggered via antigen receptors on B-cells (BCR), T-cells (TCR) or via another Fc receptor Isoform IIB1 fails to mediate endocytosis or phagocytosis. Isoform IIB2 does not trigger phagocytosis
Tissue Specificity
Is the most broadly distributed Fc-gamma- receptor. Expressed in monocyte, neutrophils, macrophages, basophils, eosinophils, Langerhans cells, B-cells, platelets cells and placenta (endothelial cells). Not detected in natural killer cells
Cellular Localization
Cell membrane; Single-pass type I membrane protein