pathway
Last reviewed 01/2018
The electron transfer chain consists of the following sequential enzymes:
- NADH dehydrogenase
- coenzyme Q - ubiquinone
- ubiquinone dehydrogenase
- cytochrome c
- cytochrome c oxidase
Additionally, FADH2 enters the chain at the level of coenzyme Q as the coenzyme in the membrane-bound portion of the enzyme succinate dehydrogenase. The protein pumping activities of NADH dehydrogenase, ubiquinone dehydrogenase and cytochrome c oxidase all contribute to ongoing oxidative phosphorylation.