Question

What do cytochromes contain?

Answer 1

Cytochromes:

1. They are heme proteins that go through an oxidation-reduction reaction.
2. They are distinguished by their apoprotein structure, heme structures, and optical absorption in the visible spectrum.
3. They are an integral part of the electron transport chain located in the mitochondria.

Cytochromes contains the following:

1. It contains heme groups and is responsible for electron transport.
2. The heme group is a highly conjugated ring structure that wraps around a metal ion.
3. It easily transitions between oxidation states.
4. For most cytochromes that interconvert between Fe2⁺ (reduced) and Fe3⁺ (oxidized) states or between Fe2⁺ and Fe3⁺ states, the metal ion detected is iron.
5. As a result, the cytochromes are capable of both reduction and oxidation.