Description
Product Usage Information
Western Blotting: 1:1000
Immunoprecipitation: 1:50
IHC Leica Bond: 1:100
Immunohistochemistry (Paraffin): 1:100
Flow Cytometry (Fixed/Permeabilized): 1:400
Storage
Supplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg/ml BSA, 50% glycerol and less than 0.02% sodium azide. Store at -20°C. Do not aliquot the antibody. For a carrier free (BSA and azide free) version of this product see product # 81563 .
Protocol
Available protocols: Western Blotting, Immunoprecipitation, IHC Leica Bond, Immunohistochemistry (Paraffin), Flow Cytometry (Fixed/Permeabilized)
Specificity / Sensitivity
Fc-gamma RIIB (D8F9C) Rabbit Monoclonal Antibody recognizes endogenous levels of total FcγRIIB protein. Please note that non-specific signal was observed in kidney tubules by IHC.
Species Reactivity: Mouse
Source / Purification
Monoclonal antibody is produced by immunizing animals with a synthetic peptide corresponding to residues surrounding Pro284 of mouse FcγRIIB protein.
Background
FcγRIIB (CD32B) is a low affinity, IgG Fc-binding receptor expressed on B cells, monocytes, macrophages, and dendritic cells (DCs) (1-3). It is the inhibitory Fc receptor and signals through an immunoreceptor tyrosine-based inhibitory motif (ITIM) within its carboxy-terminal cytoplasmic tail (2). Binding of immune complexes to FcγRIIB results in tyrosine phosphorylation of the ITIM motif at Tyr292 and recruitment of the phosphatase SHIP, which mediates inhibitory effects on immune cell activation (2,4). In this way, FcγRIIB suppresses the effects of activating Fc-binding receptors (3). For example, mice deficient for FcγRIIB have greater T cell and DC responses following injection of immune complexes (5,6). In addition, FcγRIIB plays a role in B cell affinity maturation (7). Signaling through FcγRIIB in the absence of signaling through the B cell receptor (BCR) is proapoptotic, while signaling through FcγRIIB and the BCR simultaneously attenuates the apoptotic signal and results in selection of B cells with higher antigen affinity (7).
Alternate Names
AI528646; CD32; F630109E10Rik; Fc gamma receptor IIB; Fc gamma RIIB; Fc receptor, IgG, low affinity IIb; Fc-gamma RII; Fc-gamma-RII; Fc-gamma-RIIB; Fc[g]; Fc[g]RII; Fcg; Fcgamm; FcgammaRIIB; Fcgr; Fcgr2; Fcgr2a; Fcgr2b; FcgRII; Fcr-; Fcr-2; Fcr-3; FcRII; IgG Fc receptor II beta; Low affinity immunoglobulin gamma Fc region receptor II; low affinity immunoglobulin gamma Fc region receptor II-b; Ly-1; Ly-17; Ly-m2; Ly-m20; LyM-; LyM-1; Lymphocyte antigen 17; OTTMUSP00000024374; OTTMUSP00000024375
