SRP6396
Fc-gamma RIIB/CD32b human
recombinant, expressed in HEK 293 cells, ≥95% (SDS-PAGE)
Synonym(s):
CD32, CDw32, FCG2, FCGR2B, IGFR2
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About This Item
NACRES:
NA.32
UNSPSC Code:
12352200
Form:
lyophilized
Assay:
≥95% (SDS-PAGE)
Biological source:
human
Recombinant:
expressed in HEK 293 cells
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.)
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.
shipped in
wet ice
storage temp.
−20°C
Gene Information
human ... FCGR2B(2213)
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.
Preparation Note
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.
Storage Class
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
Regulatory Information
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Esteban Cruz et al.
Pharmaceutics, 13(11) (2021-11-28)
Protein aggregation constitutes a recurring complication in the manufacture and clinical use of therapeutic monoclonal antibodies (mAb) and mAb derivatives. Antibody aggregates can reduce production yield, cause immunogenic reactions, decrease the shelf-life of the pharmaceutical product and impair the capacity
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