Biochemistry Which enzyme catalyses substrate level phosphorylation in Kreb’s cycle? A ∝ Ketoglutarate dehydrogenase B Succinate thiokinase C Succinate dehydrogenase D Isocitrate dehydrogenase 💡 Explanation Which enzyme catalyses substrate level phosphorylation in Kreb's cycle? ✓ Correct Answer: B. Succinate thiokinase