SRP6396

Fc-gamma RIIB/CD32b human

recombinant, expressed in HEK 293 cells, ≥95% (SDS-PAGE)

• Synonym(s): CD32, CDw32, FCG2, FCGR2B, IGFR2
• UNSPSC Code: 12352200
• NACRES: NA.32

Properties

• biological source: human
• recombinant: expressed in HEK 293 cells
• tag: 6-His tagged (C-terminus)
• Assay: ≥95% (SDS-PAGE)
• form: lyophilized
• mol wt: calculated mol wt 20.2 kDa; observed mol wt 23-33 kDa (DTT-reduced. Protein migrates due to different glycosylation. Ala 46 is the predicted N-terminus.)
• packaging: pkg of 10 and 50 μg
• impurities: <1 EU/μg endotoxin (LAL test)
• UniProt accession no.: P31994
• shipped in: wet ice
• storage temp.: −20°C
• Gene Information: human ... FCGR2B(2213)

Description

General description

Receptors for the Fc region of IgG (Fc γ R) are members of the Ig superfamily that function in the activation or inhibition of immune responses. Three classes of human Fc γ Rs: RI (CD64), RII (CD32), and RIII (CD16), which generate multiple isoforms, are recognized. There are three genes for human Fcγ RII /CD32 (A, B, and C) and one for mouse Fcγ RII B (CD32B). CD32 is a low affinity receptor for IgG. Low affinity immunoglobulin gamma Fc region receptor II-b (FCGR2B) also known as CD32b, FCG2, IGFR2. CD32B is expressed on B cells and myeloid dendritic cells. Ligation of CD32B on B cells down regulates antibody production and may, in some circumstances, promote apoptosis. Co-ligation of CD32B on dendritic cells inhibits maturation and blocks cell activation. CD32B may also be a target for monoclonal antibody therapy for malignancies.

Physical form

Lyophilized from 0.22 μm filtered solution in PBS, pH7.4. Generally 5-8% Mannitol or trehalose is added as a protectant before lyophilization.

Reconstitution

Centrifuge the vial prior to opening. Reconstitute in sterile PBS, pH 7.4 to a concentration of 50 μg/mL. Do not vortex. This solution can be stored at 2-8°C for up to 1 month. For extended storage, it is recommended to store at -20°C.

Safety Information

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 3
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable