Q. Which of the following is not a coenzyme?
Solution:
- Coenzymes are the enzymes that catalyze biochemical reactions. For example, NAD and NADP act as coenzymes, these are derived from niacin.
- NAD and NADP are the coenzymes with enzymes of the electron transport chain to initiate the transfer of an electron from the substrate to products.
- FAD acts as a coenzyme which catalyzes the splitting of ultraviolet-induced thymine dimers.
- ATP is not a coenzyme because it does not have any property to initiate an enzyme-catalyzed reaction.
- ATP can be an allosteric modulator, a product, or a substrate, a signaling molecule for an enzyme but not a coenzyme.
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