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Question

What is cytochrome C in biology?


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Solution

Electron transport chain:

  1. During cellular respiration, after the first two steps,i.e. Glycolysis and Krebs cycle, the third step is the electron transport chain that is located in the inner mitochondrial membrane.
  2. This electron transport chain is responsible to generate ATP from NADH2 and FADH2 molecules that are generated during the first two steps of cellular respiration.
  3. The functioning of the electron transport chain (ETC) occurs through a series or chain of electron carriers. It has nine electron carriers arranged in a chain format namely- NAD, FAD, FMN, Coenzyme-Q/ubiquinone, Cytochrome-b,c2, c, a and a3

Cytochrome-c:

  1. Cytochrome C is a component of the electron transport chain and is a protein( enzyme).
  2. It's one of the nine electron carriers found in the electron transport chain, and it's found in the inner mitochondrial membrane.
  3. Cytochrome c's job is to transport electrons from one complex of inner mitochondrial membrane integral membrane proteins to another thus, it is a mobile electron carrier.
  4. As a result, it is critical for cellular respiration.

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