CYBB,NOX2,Cytochrome b-245 heavy chain,CGD91-phox,Cytochrome b,558,subunit beta,Cytochrome b558 subunit beta,Heme-binding membrane glycoprotein gp91phox,NADPH oxidase 2Neutrophil cytochrome b 91 kDa polypeptide,Superoxide-generating NADPH oxidase heavy chain subunit,gp91-1,gp91-phox,p22 phagocyte B-cytochrome
Cell localization:Membranous.Cytochrome b (-245) is composed of cytochrome b alpha (CYBA) and beta (CYBB) chain. It has been proposed as a primary component of the microbicidal oxidase system of phagocytes. CYBB deficiency is one of five described biochemical defects associated with chronic granµLomatous disease (CGD). In this disorder, there is decreased activity of phagocyte NADPH oxidase, neutrophils are able to phagocytize bacteria but cannot kill them in the phagocytic vacuoles. The cause of the killing defect is an inability to increase the cells respiration and consequent failure to deliver activated oxygen into the phagocytic vacuole. [provided by RefSeq, JµL 2008],
