One substrate level phosphorylation occurs in the citric acid cycle in the reaction catalyzed by: one substrate level phosphorylation occurs in the citric acid cycle in the reaction catalyzed by: succinyl coa synthetase. α-ketoglutarate dehydrogenase. succinate dehydrogenase. isocitrate dehydrogenase. citrate synthase.

Only one substrate level phosphorylation occurs in the citric acid cycle (otherwise called kreb’s cycle). This substrate level phosphorylation is catalyzed by the enzyme, Succinyl CoA Synthetase. The substrates of this substrate level phosphorylation are Succinyl CoA, guanosine diphosphate (GDP) and inorganic phosphate (Pi)