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Your Position: Accueil > Protein > Fc gamma RIIB / CD32b > CDB-C82E4

Biotinylated Cynomolgus Fc gamma RIIB / CD32b Protein, His,Avitag™ (SPR & BLI & MALS verified)

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  • Synonym
    FCGR
  • Source
    Biotinylated Cynomolgus CD32b, His,Avitag(CDB-C82E4) is expressed from human 293 cells (HEK293). It contains AA Ala 46 - Pro 224 (Accession # Q8SPW3-1).
    Predicted N-terminus: Ala 46
  • Molecular Characterization
    Fc gamma RIIB / CD32b Structure

    This protein carries a polyhistidine tag at the C-terminus, followed by an Avi tag (Avitag™).

    The protein has a calculated MW of 23.6 kDa. The protein migrates as 30-35 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.

  • Labeling
    Biotinylation of this product is performed using Avitag™ technology. Briefly, the single lysine residue in the Avitag is enzymatically labeled with biotin.
  • Protein Ratio
    Passed as determined by the HABA assay / binding ELISA.
  • Endotoxin
    Less than 1.0 EU per μg by the LAL method.
  • Purity

    >95% as determined by SDS-PAGE.

    >90% as determined by SEC-MALS.

  • Formulation

    Lyophilized from 0.22 μm filtered solution in PBS, pH7.4 with trehalose as protectant.

    Contact us for customized product form or formulation.

  • Reconstitution

    Please see Certificate of Analysis for specific instructions.

    For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.

  • Storage

    For long term storage, the product should be stored at lyophilized state at -20°C or lower.

    Please avoid repeated freeze-thaw cycles.

    This product is stable after storage at:

    1. -20°C to -70°C for 12 months in lyophilized state;
    2. -70°C for 12 months under sterile conditions after reconstitution.
SDS-PAGE
Fc gamma RIIB / CD32b SDS-PAGE

Biotinylated Cynomolgus CD32b, His,Avitag on SDS-PAGE under reducing (R) condition. The gel was stained with Coomassie Blue. The purity of the protein is greater than 95%.

SEC-MALS
Fc gamma RIIB / CD32b MALS images

The purity of Biotinylated Cynomolgus CD32b, His,Avitag (Cat. No. CDB-C82E4) is more than 90% and the molecular weight of this protein is around 35-45 kDa verified by SEC-MALS.

Bioactivity-SPR
 Fc gamma RIIB / CD32b SPR

Captured Biotinylated Cynomolgus Fc gamma RIIB / CD32b, His Tag, Avi Tag Protein (Cat. No. CDB-C82E4) on Biotin CAP - Series S sensor Chip can bind Rituximab biosimilar (Cat. No. CD0-M36) with an affinity constant of 4.52 μM as determined in a SPR assay (Biacore T200) (QC tested).

Bioactivity-BLI
 Fc gamma RIIB / CD32b BLI

Loaded Biotinylated Cynomolgus CD32b, His,Avitag (Cat. No. CDB-C82E4) on SA Biosensor, can bind MabThera® (Rituximab) with an affinity constant of 1.3 μM as determined in BLI assay (ForteBio Octet Red96e) (Routinely tested).

  • Background
    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) is also known as CD32b, FCG2, IGFR2. CD32B is expressed on B cells and myeloid dendritic cells. Ligation of CD32B on B cells downregulates 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.
  • Clinical and Translational Updates

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  • Number of Drugs in Clinical Trials:5 Details
  • Latest Research Phase:Phase 3 Clinical

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