FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term quinol-cytochrome-c reductase activity ID (Ontology) GO:0008121 (Gene Ontology)
Definition 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).
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Data ClassFieldDirect annotations
Genes (FBgn)GO_MOLECULAR_FUNCTION
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 quinol-cytochrome-c reductase activity (all annotations which use CV term, excluding "NOT" statements)
     contributes_to | quinol-cytochrome-c reductase activity       --
     enables | quinol-cytochrome-c reductase activity       --
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molecular_function
 |__electron transfer activity_____________________________________________________
monoatomic cation transmembrane transporter activity                               |
 |__proton transmembrane transporter activity______________________________________|
monoatomic ion transmembrane transporter activity                                  |
 |__active monoatomic ion transmembrane transporter activity_______________________|
primary active transmembrane transporter activity                                  |
 |__oxidoreduction-driven active transmembrane transporter activity________________|
 |__active monoatomic ion transmembrane transporter activity_______________________|
oxidoreductase activity                                                            |
 |__oxidoreductase activity, acting on diphenols and related substances as donors__|
                                                                                   quinol-cytochrome-c reductase activity  8 rec.
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Is a 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
Part of
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Synonyms
  • "complex III (mitochondrial electron transport) activity" NARROW[ EC:7 ]
    "cytochrome" BROAD
    "cytochrome a" NARROW
    "cytochrome a3/copper complex" NARROW
    "cytochrome b562" NARROW
    "cytochrome b566" NARROW
    "cytochrome c1" NARROW
    "electron transporter, transferring electrons within CoQH2-cytochrome c reductase complex activity" RELATED
    "electron transporter, transferring electrons within cytochrome c oxidase complex activity" RELATED
    "mitochondrial electron transport complex III" RELATED
    "soluble cytochrome b562" NARROW
    "ubiquinol-cytochrome c oxidoreductase activity" RELATED
    "ubiquinol-cytochrome c-2 oxidoreductase activity" RELATED
    "ubiquinol-cytochrome c1 oxidoreductase activity" RELATED
    "ubiquinol-cytochrome c2 reductase activity" RELATED
    "ubiquinol-cytochrome-c reductase activity" NARROW
    "ubiquinol:ferricytochrome-c oxidoreductase activity" RELATED
    "ubiquinone--cytochrome-c oxidoreductase activity" RELATED[ EC:7 ]
    "ubiquinone-cytochrome c oxidoreductase activity" RELATED[ EC:7 ]
    "ubiquinone-cytochrome c reductase activity" RELATED[ EC:7 ]
Secondary IDs
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EC:7.1.1.8
MetaCyc:RXN-15816
Reactome:R-HSA-164651 "Electron transfer from ubiquinol to cytochrome c of complex III"
RHEA:11484