Cytochrome b-245 Protein complex From Wikipedia, the free encyclopedia The Cytochrome b (-245) protein complex is composed of cytochrome b alpha (CYBA)[1] and beta (CYBB)[2] chain. References [1]"Entrez Gene: CYBA cytochrome b-245, alpha polypeptide". [2]"Entrez Gene: CYBB cytochrome b-245, beta polypeptide (chronic granulomatous disease)". This protein-related article is a stub. You can help Wikipedia by adding missing information.vte Related Articles