Biochemistry Substrate level phosphorylation is seen in reaction catalyzed by which enzyme of citric acid cycle? A Pyruvate kinase B Succinate thiokinase C Phosphoglycerate kinase D All of the above 💡 Explanation Substrate level phosphorylation is seen in reaction catalyzed by which enzyme of citric acid cycle? ✓ Correct Answer: B. Succinate thiokinase