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Explanation of cytochromes

Give a brief explanation of cytochromes.

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Cytochrome is protein of the internal mitochondrial membrane which is specialized in the electron transmit and takes part in respiratory chain. Energized electrons released through the hydrogen donors FADH2 and NADH2 (then retransformed in FAD and NAD) pass throughout a series of cytochromes losing energy in each and every passage. The energy is then employed in synthesis of ATP.

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