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
No articles returned.