Mobile carriers: ubiquinone (CoQ) and cytochrome c
Cofactors used
What it does, reaction by reaction
Electron Transport Chain (Complexes I–IV) Energy Metabolism & Cellular Respiration · Inner mitochondrial membrane
Electron-carrier integration: NADH/FADH2 → Q pool → Complex III → cytochrome c → Complex IV → O2
Converts NADH/FADH2 into Ubiquinone (CoQ)
› Notes
Cytochrome c is a small, soluble peripheral protein on the outer face of the inner membrane that carries one electron at a time from Complex III to Complex IV. For NADH-derived electrons, the ETC pumps a total of 10 H+ per NADH (4 at I, 4 at III, 2 at IV); for FADH2-derived electrons entering through Complex II, it pumps 6 H+ (0 at II, 4 at III, 2 at IV).
Showing all 1 reactions.
What accelerates and inhibits it
Regulation is pathway-specific, so each context is listed separately
No regulation recorded for this enzyme in the source documents.
Recent literature
Nothing is fetched until you ask, so the page stays fast and the request is yours rather than automatic.
Europe PMC · ten most recent, newest first