3-Phosphoglyceroyl-Phosphate-Polyphosphate Phosphotransferase Activity
3-Phospho-D-Glyceroyl-Phosphate:polyphosphate Phosphotransferase Activity
Catalysis of the reaction: long-chain-polyphosphate + 3-phospho-D-glyceroyl-phosphate = long-chain-polyphosphate + 3-phosphoglycerate.