| umls-concept:C1166911 | skos:definition | GO: A protein complex located in the mitochondrial inner membrane that forms part of the mitochondrial respiratory chain. Contains about 10 polypeptide subunits including four redox centers: cytochrome b/b6, cytochrome c1 and an 2Fe-2S cluster. Catalyzes the oxidation of ubiquinol by oxidized cytochrome c1. [GOC:mtg_sensu, ISBN:0198547684] | lld:umls |
