(2R)-3-phosphoglycerate + ATP = (2R)-3-phospho-glyceroyl phosphate + ADP Carbohydrate degradation; glycolysis; pyruvate from D-glyceraldehyde 3-phosphate: step 2/5. Monomer. This glycosomal PGK has a C-terminal extension of 38 AA which is not present in the cytosolic isoenzyme. This domain most likely serves as topogenic signal to direct the glycosomal PKG to the glycosome. Belongs to the phosphoglycerate kinase family.