2.7.11.32 ADP + [pyruvate phosphate dikinase] - 2.7.11.32 ADP + [pyruvate, phosphate dikinase] - 2.7.11.32 ADP + [pyruvate, phosphate dikinase] reversible phosphorylation at Thr527 and Ser528, but not Thr309 and Ser506, of PPDK 2.7.11.32 additional information PPDK regulatory protein (PDRP) is a unique bifunctional enzyme, catalyzes this light-dependent regulation by reversible phosphorylation of an active-site Thr527 in PPDK