has part quinol-cytochrome-c reductase activity https://github.com/geneontology/go-ontology/issues/20616 https://github.com/geneontology/go-ontology/issues/21275 https://github.com/geneontology/go-ontology/issues/26941 https://github.com/geneontology/go-ontology/issues/30272 ubiquinol:ferricytochrome-c oxidoreductase activity EC:7.1.1.8 mitochondrial electron transport complex III RHEA:11484 Reactome:R-HSA-164651 cytochrome b566 complex III (mitochondrial electron transport) activity GO:0045153 ubiquinol-cytochrome c1 oxidoreductase activity GO:0045154 MetaCyc:RXN-15816 electron transporter, transferring electrons within CoQH2-cytochrome c reductase complex activity molecular_function cytochrome ubiquinone-cytochrome c reductase activity ubiquinol-cytochrome-c reductase activity cytochrome b562 GO:0008121 ubiquinol-cytochrome c2 reductase activity cytochrome c1 Enables the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: a quinol + 2 Fe(III)-cytochrome c = a quinone + 2 Fe(II)-cytochrome c + 2 H+(out). cytochrome a electron transporter, transferring electrons within cytochrome c oxidase complex activity cytochrome a3/copper complex ubiquinol-cytochrome c oxidoreductase activity ubiquinone-cytochrome c oxidoreductase activity ubiquinol-cytochrome c-2 oxidoreductase activity ubiquinone--cytochrome-c oxidoreductase activity soluble cytochrome b562 electron transfer activity proton transmembrane transporter activity oxidoreduction-driven active transmembrane transporter activity oxidoreductase activity, acting on diphenols and related substances as donors active monoatomic ion transmembrane transporter activity