(2R)-3-phosphoglycerate + ATP = (2R)-3-phospho-glyceroyl phosphate + ADP Carbohydrate degradation; glycolysis; pyruvate from D-glyceraldehyde 3-phosphate: step 2/5. Monomer. Interacts with calmodulin in the presence of Ca(2+). Expressed during development. Expression levels decrease steadily from the initiation of development until culmination. Levels increase after 18 hours of development and peak at 22 hours, after which they decrease again. Belongs to the phosphoglycerate kinase family.