Mutations at the Qo Site of the Cytochrome bc1 Complex Strongly Affect Oxygen Binding.

Abstract excerpt

The homodimeric bc1 protein complex is embedded in membranes of mitochondria and photosynthetic bacteria, where it transports protons across the membrane to maintain an electrostatic potential used to drive ATP synthesis as part of the respiratory or photosynthetic pathways. The reaction cycle of the bc1 complex is driven by series of redox processes involving substrate molecules from the membrane, but occasional...

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