Question

What are cytochromes?​

Answer 1

Cytochrome

Cytochromes are a group of membrane bound proteins that consists of a haeme group --- iron containing prosthetic group. These proteins are involved in the electron transport chains as they can very easily get oxidized and reduced. The iron group present in these proteins can easily gain or lose electrons.

Examples: Cytochrome a, Cytochrome b

and Cytochrome f.

Additional points :-

Cytochrome f is the largest subunit of cytochrome b6f complex.

Answer 2

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Cytochrome, any of a group of hemoprotein cell components that, by readily undergoing reduction and oxidation (gain and loss of electrons) with the aid of enzymes, serve a vital function in the transfer of energy within cells. Hemoproteins are proteins linked to a nonprotein, iron-bearing component. It is the iron (heme) group attached to the protein that can undergo reversible oxidation and reduction reactions, thereby functioning as electron carriers within the mitochondria (the organelles that produce energy for the cell through cellular respiration).

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