(2R)-3-phosphoglycerate + ATP = (2R)-3-phospho-glyceroyl phosphate + ADP D-glyceraldehyde 3-phosphate = dihydroxyacetone phosphate Carbohydrate degradation; glycolysis; D-glyceraldehyde 3-phosphate from glycerone phosphate: step 1/1. Carbohydrate degradation; glycolysis; pyruvate from D-glyceraldehyde 3-phosphate: step 2/5. Monomer (PGK) and homotetramer (PGK-TIM). In the N-terminal section; belongs to the phosphoglycerate kinase family. In the C-terminal section; belongs to the triosephosphate isomerase family.