(2R)-3-phosphoglycerate + ATP = (2R)-3-phospho-glyceroyl phosphate + ADP Carbohydrate degradation; glycolysis; pyruvate from D-glyceraldehyde 3-phosphate: step 2/5. Monomer. This cytosolic PGK lacks a C-terminal extension of 38 AA which is present in the glycosomal isoenzyme. Belongs to the phosphoglycerate kinase family.