Editing Proton pump (section)

===Electron transport complex III===
{{Main|Coenzyme Q – cytochrome c reductase}}

[[Coenzyme Q – cytochrome c reductase|Complex III]] (EC 1.10.2.2) (also referred to as [https://www.ncbi.nlm.nih.gov/pmc/articles/PMC372766/ cytochrome b<sub>c</sub>1] or the [[Coenzyme Q – cytochrome c reductase|coenzyme Q : cytochrome c – oxidoreductase]]) is a proton pump driven by electron transport. Complex III is a multi-subunit [[transmembrane protein]] encoded by both the [[Cytochrome b|mitochondrial (cytochrome b)]] and the [[Nuclear DNA|nuclear genomes]] (all other subunits). Complex III is present in the inner mitochondrial membrane of all aerobic eukaryotes and the inner membranes of most eubacteria. This enzyme helps to establish a transmembrane difference of proton electrochemical potential that the ATP synthase of mitochondria then uses to synthesize ATP.{{Citation needed|date=August 2023}}