This antibody reacts with an extracellular epitope of gp91phox. The antibody recognizes the epitope in the native conformation. This antibody reacts with Flavocytochrome b558 on flow cytometry.
The NADPH oxidase is a multicomponent enzyme that transfers electrons from NADPH to O2 to generate superoxide (O2 -), a key part of the phagocytic or neutrophilic respiratory burst response. Flavocytochrome b558 is the catalytic component of the phagocyte NADPH oxidase. It is a transmembrane heterodimer composed of a large glycoprotein, gp91phox (PHagocyte OXidase) and a smaller protein, p22phox. Upon cell stimulation, flavocytochrome b558 assembles with p67phox, p47phox, and the GTP-binding protein Rac and becomes activated to generate O2 -. Mutations in gp91phox, p22phox, or other components of the NADPH oxidase can result in chronic granulomatous disease, which is associated with significant morbidity and mortality due to a predisposition to recurrent bacterial and fungal infections.Synonyms: CYBA, Cytochrome b(558) alpha chain, Cytochrome b558 subunit alpha, Neutrophil cytochrome b 22 kDa polypeptide, Superoxide-generating NADPH oxidase light chain subunit, p22 phagocyte B-cytochrome, p22-phox