In TCA cycle substrate level phosphorylation occurs at____________?
Correct answer: A. Thiokinase
- A. Thiokinase
- B. Malonate reduction
- C. Succinate dehydrogenase
- D. None of the above
Explanation
Substrate-level phosphorylation in the TCA cycle occurs when succinyl-CoA is converted to succinate by succinyl-CoA synthetase, also called succinate thiokinase. This produces GTP, which is energetically equivalent to ATP.
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