. "A protein complex that transfers electrons from ubiquinol to cytochrome c and translocates two protons across a membrane. The complex contains a core structure of three catalytic subunits: cytochrome b, the Rieske iron sulfur protein (ISP), and cytochrome c1, which are arranged in an integral membrane-bound dimeric complex; additional subunits are present, and vary among different species." . . . . . "ubiquinol-cytochrome-c reductase complex" . "cytochrome bc1 complex" . "respiratory chain complex III" . "complex III" . "cytochrome bc(1) complex" . "electron transport complex III" . "ubiquinol-cytochrome c oxidoreductase complex" . . . . . .