obsolete mitochondrial respiratory chain complex III https://github.com/geneontology/go-ontology/issues/27253 true GO:0015008 mitochondrial cytochrome bc1 complex GO:0005750 cellular_component mitochondrial complex III The reason for obsoletion is that this term unnecssarily specified a cellular compartment. mitochondrial ubiquinol-cytochrome-c reductase complex mitochondrial cytochrome bc(1) complex OBSOLETE. 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. mitochondrial electron transport complex III mitochondrial ubiquinol-cytochrome c oxidoreductase complex mitochondrial coenzyme Q-cytochrome c oxidoreductase complex mitochondrial coenzyme Q-cytochrome c reductase complex respiratory chain complex III