Cytochrome b-245 light chain (p22-phox) is one of the key electron transfer elements of the NADPH oxidase in phagocytes [1].

1: p22phox is a critical component of the superoxide-generating NADH/NADPH oxidase system and regulates angiotensin II-induced hypertrophy in vascular smooth muscle cells. Ushio-Fukai M, Zafari AM, Fukui T, Ishizaka N, Griendling KK; J Biol Chem 1996;271:23317-23321. PMID:8798532