Cytochrome

Definition

Cytochrome is a class of heme-containing proteins involved in electron transport and redox reactions. They play a crucial role in the electron transport chain during cellular respiration.

5 Must Know Facts For Your Next Test

1. Cytochromes are located in the inner mitochondrial membrane in eukaryotes.
2. They facilitate the transfer of electrons between complexes in the electron transport chain.
3. Cytochromes contain a heme group that can undergo reversible oxidation and reduction.
4. They contribute to the generation of a proton gradient used for ATP synthesis.
5. Different types of cytochromes, such as cytochrome c, have specific roles in cellular respiration.

Review Questions

Related terms

Electron Transport Chain:

A series of protein complexes that transfer electrons to generate a proton gradient for ATP production.

Heme Group: An iron-containing molecule found in various proteins, including cytochromes, that facilitates redox reactions.

ATP Synthase:

An enzyme complex that synthesizes ATP using energy derived from a proton gradient across the mitochondrial membrane.