|Application ||WB, IHC|
|Calculated MW||34044 Da|
|Other Names||Low affinity immunoglobulin gamma Fc region receptor II-b, IgG Fc receptor II-b, CDw32, Fc-gamma RII-b, Fc-gamma-RIIb, FcRII-b, CD32, FCGR2B, CD32, FCG2, IGFR2|
|Target/Specificity||A synthetic peptide corresponding to residues at the C-terminus of human Fc-gamma RII-b was used as an immunogen.|
|Format||50 mM Tris-Glycine (pH 7.4), 0.15 M NaCl, 40% Glycerol, 0.01% sodium azide and 0.05% BSA.|
|Storage||Maintain refrigerated at 2-8°C for up to 6 months. For long term storage store at -20°C in small aliquots to prevent freeze-thaw cycles.|
|Precautions||Fc gamma RIIb Antibody (C-term) is for research use only and not for use in diagnostic or therapeutic procedures.|
|Synonyms||CD32, FCG2, IGFR2|
|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.|
|Cellular Location||Cell membrane; Single-pass type I membrane protein|
|Tissue Location||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|
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Provided below are standard protocols that you may find useful for product applications.
Low affinity IgG Fc receptor gamma II (Fc-gamma II), also known as CD32, is a member of the immunoreceptor tyrosine-based activating/inhibitory motif (ITAM/ITIM) family. Fc gamma receptors play a critical role in immunity by linking the IgG antibody mediated response with the regulatory functions of the immune system (1). Three classes of Fc gamma receptor exist; Fc gamma RI (CD64, a high affinity receptor), Fc gamma RII, and RIII (CD32 and CD16 respectively, both low affinity receptors). Fc gamma RIIa is an activating receptor, while RIIb1, RIIb2, and RIIb3 are inhibitory receptors generated by alternative splicing (1-2). Fc gamma RIIa is critical for antigen-presenting-cell activation and Fc gamma RIIb downregulates B-cell functions (3). Fc gamma RIIb has also been known to block the inflammatory immune response in mice (4). Once phosphorylated on tyrosine residues, Fc gamma RIIb associates with SHIP to downregulate phagocytosis.
1. Ravetch J, et al. Annu Rev Immunol. 19: 275-90, 2001
2. Tsubata T. (1999). Curr Opin Immunol 11, 249
3. Malbec O.et al. Curr Microbiol Immunol 244, 13
4. Marie et al. Immunity 14, 69
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