This kit is designed for the detection of binding between FCGR2A (CD32a) (167R) and human IgG Fc fragment using a homogeneous AlphaLISA® assay (no wash steps). This assay can facilitate the design and development of antibody therapeutics by using competitive binding.
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This kit is designed for the detection of binding between FCGR2A (CD32a) (167R) and human IgG Fc fragment using a homogeneous AlphaLISA assay (no wash steps). This assay can facilitate the design and development of antibody therapeutics by using competitive binding.
The Fc-Gamma Receptors (FCGRs) are members of immunoglobulin superfamily and play a critical role in the function of therapeutic antibodies. FCGRs are divided into three classes Fc-Gamma Receptor 1 (CD64), FCGR1; Fc-Gamma Receptor 2 (CD32), FCGR2 and Fc-Gamma receptor 3 (CD16), FCGR3. FCGR2 is expressed as two distinct forms (FCGR2A and FCGR2B) encoded by two different highly homologous genes in a cell type specific manner.
FCGR2 is a low/intermediate affinity receptor for polyvalent immune-complexed IgG. It is involved in phagocytosis, secretion of enzymes and inflammatory mediators, antibody-dependent cellular cytotoxicity (ADCC). FCGR2A delivers an activating signal upon ligand binding. In contrast, FCGR2B delivers an inhibitory signal. FCGR2A contains two amino acid sequences (167R and 167H) that are characteristic of an immunoreceptor tyrosine-based activation motif.
The AlphaLISA detection of FCGR2A and IgG Fc fragment binding uses IgG Fc AlphaLISA® Acceptor beads to capture the human FCGR2A and Streptavidin-coated Donor beads to capture the biotinylated human FCGR2A. Donor beads and Acceptor beads come into proximity through IgG Fc fragment binding to FCGR2A. Excitation of the Donor beads provokes the release of singlet oxygen that triggers a cascade of energy transfer reactions in the Acceptor beads, resulting in a sharp peak of light emission at 615 nm.
|Assay Target Class||Fc-receptor|
|Product Brand Name||AlphaLISA|
|Shipping Condition||Blue Ice|
|Unit Size||5,000 Assay Points|