May trigger the phosphorylation of FTSZ2-1 and FTSZ2-2. (2R)-3-phosphoglycerate + ATP = (2R)-3-phospho-glyceroyl phosphate + ADP Carbohydrate biosynthesis; Calvin cycle. Monomer (By similarity). Binds to FTSZ2-1 and FTSZ2-2 (PubMed:22823492). Belongs to the phosphoglycerate kinase family.