Active Recombinant Human FCGR2A protein, His & Avi-tagged, Biotinylated

Specification :
| 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. 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 ITIM bearing receptors may also be coexpressed and co-engaged 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 : HEK293 | Species : Human | Tag : His & Avi | Predicted N Terminal : Ala 35 | Form : Lyophilized from 0.22 μm filtered solution in PBS, pH7.4, 10% trehalose. | Bio-activity : Immobilized Yervoy Ipilimumab at 10 μg/mL (100 μl/well),can bind Biotinylated Human FcGR2A / CD32a (R131) with a linear range of 0.15-10 μg/mL. | Molecular Mass : This protein carries an Avi tag at the C-terminus, followed by a polyhistidine tag. The protein has a calculated MW of 24 kDa. The protein migrates as 30-38 kDa on a SDS-PAGE gel under reducing (R) condition due to glycosylation. | Protein length : Ala 35 – Ile 217 | Endotoxin : Less than 1.0 EU per μg by the LAL method. | Purity : >95% as determined by SDS-PAGE. | Storage : For long term storage, the product should be stored at lyophilized state at -20°C or lower. Please avoid repeated freeze-thaw cycles. No activity loss is observed after storage at: 4-8°C for 12 months in lyophilized state; -70°C for 3 months under sterile conditions after reconstitution. | Storage buffer : PBS, pH7.4 | Reconstitution : It is recommended that sterile water be added to the vial to prepare a stock solution of 0.2 ug/ul. Centrifuge the vial at 4℃ before opening to recover the entire contents. | Shipping : Powder,RT