Question

Is cytochrome c is oxidized or reduced?

Answer 1

Cytochrome c:

1. Due to the interconversion between the ferrous and ferric ions, cytochrome c is oxidized and reduced simultaneously.
2. Cytochromes are the proteins that contain the haem group.
3. They are also known as haem proteins due to the presence of the haem group.
4. Cytochrome c is a mobile electron carrier that aids in electron transfer from complex III to complex IV.
5. It can be oxidized and reduced as its iron atom converts between the ferrous and ferric forms, but it does not bind oxygen.
6. Cytochrome c accepts electrons from complex III, which acts as an electron donor.
7. Then it moves to complex IV, where cytochrome c is oxidized, releasing an electron.
8. Because of the presence of the haem group at its center, it can carry out various redox reactions that result in electron transport.