2.7.4.27 [pyruvate, phosphate dikinase] phosphate + phosphate = [pyruvate, phosphate dikinase] + diphosphate - - 2.7.4.27 [pyruvate, phosphate dikinase] phosphate + phosphate = [pyruvate, phosphate dikinase] + diphosphate enzyme PDRP contains a single active site that catalyzes both phosphorylation and dephosphorylation, cf. EC 2.7.11.32. Catalytic mechanism of PPDK regulatory protein, overview 739360