Abstract
The cytochrome bc 1 complex is an oligomeric electron transfer enzyme located in the inner membrane of mitochondria, where it participates in respiration, and the plasma membrane of bacteria, where it participates in respiration, denitrification, and nitrogen fixation (Trumpower and Gennis, 1994). The cytochrome bc 1 complex transfers electrons from ubiquinol to cytochrome c and links this electron transfer to translocation of protons across the membrane in which it resides, thus converting the available free energy of the oxidation-reduction reaction into an electrochemical proton gradient. The relationship between the cytochrome bc 1 complex, the cytochrome c oxidase complex, and some of the dehydrogenases that form the ubiquinol substrate for the cytochrome bc 1 complex is shown in Fig. 1.
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Trumpower, B.L. (1999). Energy Transduction in Mitochondrial Respiration by the Proton-Motive Q-Cycle Mechanism of the Cytochrome bc 1 Complex. In: Papa, S., Guerrieri, F., Tager, J.M. (eds) Frontiers of Cellular Bioenergetics. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-4843-0_11
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DOI: https://doi.org/10.1007/978-1-4615-4843-0_11
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