coenzyme
(noun)
An organic molecule that is necessary for an enzyme to function.
Examples of coenzyme in the following topics:
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Control of Metabolism Through Enzyme Regulation
- Many enzymes only work if bound to non-protein helper molecules called cofactors and coenzymes.
- Coenzymes are organic helper molecules with a basic atomic structure made up of carbon and hydrogen.
- The most common coenzymes are dietary vitamins.
- The availability of various cofactors and coenzymes regulates enzyme function.
- Vitamins are important coenzymes or precursors of coenzymes and are required for enzymes to function properly.
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Breakdown of Pyruvate
- In order for pyruvate, the product of glycolysis, to enter the next pathway, it must undergo several changes to become acetyl Coenzyme A (acetyl CoA).
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Essential Nutrients for Plants
- Sulfur is part of certain amino acids, such as cysteine and methionine, and is present in several coenzymes.
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Citric Acid Cycle
- A phosphate group is substituted for coenzyme A, and a high-energy bond is formed.
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Anaerobic Cellular Respiration
- The first reaction is catalyzed by pyruvate decarboxylase, a cytoplasmic enzyme, with a coenzyme of thiamine pyrophosphate (TPP, derived from vitamin B1 and also called thiamine).
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Energy and Nutrient Requirements for Prokaryotes
- It is also present in several vitamins and coenzymes.