Abstract
Electron transport-coupled phosphorylation with fumarate as terminal acceptor in Wolinella succinogenes yields less than 1 ATP/2 electrons. The delta mu H generated by the electron transport is 0.18 V and the H+/electron ratio is 1. The electron transport chain is made up of two dehydrogenases (hydrogenase and formate dehydrogenase) that catalyze the reduction of menaquinone, and fumarate reductase which catalyzes the oxidation of menaquinol. C-type cytochromes are not involved. The phosphorylative electron transport with sulfur as terminal acceptor in W. succinogenes or Desulfuromonas acetoxidans does not involve known quinones. The ATP yields should be even smaller than those with fumarate. Succinate oxidation by sulfur, which is a catabolic reaction in D. acetoxidans, is accomplished by reversed electron transport.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
