GO:0008121

Ubiquinol-cytochrome c reductase complex, cytochrome c1 subunit (RefSeq)
Ubiquinol-cytochrome c reductase complex, cytochrome b subunit (RefSeq)
Ubiquinol-cytochrome c reductase complex, iron-sulfur subunit (Rieske iron-sulfur protein) (RefSeq)