Microbial Metabolism - Electron Transport and the Proton Motive Force
10 important questions on Microbial Metabolism - Electron Transport and the Proton Motive Force
What are iron-sulfur proteins?
Where do protons originate from during electron transport?
- NADH
- The dissociation of H2O into H+ and OH- in the cytoplasm.
What is the result of the extrusion of H+ to the environment during electron transport?
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What is the result of the separation of H+ and OH- during electron transport?
What is oxidative phosphorylation in prokaryotes?
- Stepwise cytoplasmic membrane-bound oxidation of an electron donor by an electron acceptor via a respiratory chain
- Associated generation of a proton motive force (pmf) via the translocation of protons across the membrane (DpH and DY)
- Phosphorylation of ADP with Pi to ATP via the ATP-synthase with the aid of influx of energized protons
What is Complex I of the proton motive force?
It's also called NADH: quinone oxidoreductase, because NADH is oxidized and quinone reduced.
What is Complex II of the proton motive force?
What are the functions of Complex III (cytochrome bc1 complex) of the proton motive force?
To interact with quinones in such a way that two additional protons are pumped at the Q-bc1 site.
What is the function of cytochrome c?
What is Complex IV?
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