(Pyruvate, water dikinase) phosphate phosphotransferase

(Pyruvate, water dikinase)-phosphate phosphotransferase (EC 2.7.4.28, PSRP) is an enzyme with systematic name (pyruvate, water dikinase) phosphate:phosphate phosphotransferase. This enzyme catalyses the following chemical reaction

[pyruvate, water dikinase] phosphate + phosphate ⇌ [pyruvate, water dikinase] + diphosphate

The enzyme from the bacterium Escherichia coli is bifunctional.