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Recombinant Biotinylated Human Fc gamma RIIA / CD32a (R167), Avi Tag (Avitag™), 200µg  

Recombinant Biotinylated Human Fc gamma RIIA / CD32a (R167), Avi Tag (Avitag™), 200µg

Biotinylated Human Fc gamma RIIA / CD32a (R167) Protein, Ala 36 - Ile 218, expressed from human 293 cells (HEK293), Avitag™, His Tag (SPR & BLI verified)

Synonym
recombinant, human, biotinylated, protein, CD32a,FCGR2A,CD32,FCG2 ,FCGR2A1,IGFR2

More details

CDA-H82E7-200

Availability: within 7 days

1 380,00 €

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. The activating isoform, CD32A, is expressed on monocytes, neutrophils, platelets and dendritic cells. CD32A is expressed on many immune cell types (macrophage, neutrophil, eosinophils, platelets, dendritic cells and Langerhan cells), where inhibitory ITIM­bearing receptors may also be coexpressed and co­engaged by specific ligands. CD32A delivers an activating signal upon ligand binding, and results in the initiation of inflammatory responses including cytolysis, phagocytosis, degranulation and cytokine production. The responses can be modulated by signals from the coexpressed inhibitory receptors such as CD32B, and the strength of the signal is dependent on the ratio of expression of the activating and inhibitory receptors. 

Source
Recombinant Biotinylated Human CD32a (R167), Avitag,His Tag (SPR & BLI verified) (CDA-H82E7) is expressed from human 293 cells (HEK293). It contains AA Ala 36 - Ile 218 (Accession # P12318-1 (R167)).
Predicted N-terminus: Ala 36

Molecular Characterization
This protein carries an Avi tag (Avitag™) at the C-terminus, followed by a polyhistidine tag.
The protein has a calculated MW of 24.0 kDa. The protein migrates as 30-35 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.

Biotinylation
Biotinylation of this product is performed using Avitag™ technology. Briefly, the single lysine residue in the Avitag is enzymatically labeled with biotin.

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. Normally trehalose is added as protectant before lyophilization.

Reconstitution
Please see Certificate of Analysis for specific instructions.

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:
-20°C to -70°C for 12 months in lyophilized state;
-70°C for 12 months under sterile conditions after reconstitution.

Bioactivity
Please refer to product data sheet.

Clinical and Translational Updates

(1) "Antibody epitopes in vaccine-induced immune thrombotic thrombocytopaenia"
Huynh, Kelton, Arnold et al
Nature (2021) 596 (7873), 565-569
(2) "Association of IgG1 Antibody Clearance with FcγRIIA Polymorphism and Platelet Count in Infliximab-Treated Patients"
Thibault, Paintaud, Sung et al
Int J Mol Sci (2021) 22 (11)
(3) "FcRn is a CD32a coreceptor that determines susceptibility to IgG immune complex-driven autoimmunity"
Hubbard, Pyzik, Rath et al
J Exp Med (2020) 217 (10)
Showing 1-3 of 40 papers.