Cytochrome bc1 complex

The ubiquinol:cytochrome c oxidoreductase (cytochrome bc₁ complex) plays a central role in the electron transport chains of bacteria, mitochondria and chloroplasts, converting redox free energy into a proton gradient used to drive the cell's metabolism through ATP synthesis. This complex catalyzes the oxidation of ubiquinol in the membrane, the reduction of cytochrome c and the translocation of protons across the membrane.

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