catalytic activity:ATP + 3-phospho-D-glycerate = ADP + 3-phospho-D-glyceroyl phosphate.,online information:Phosphoglycerate kinase entry,pathway:Carbohydrate degradation; glycolysis; pyruvate from D-glyceraldehyde 3-phosphate: step 2/5.,similarity:Belongs to the phosphoglycerate kinase family.,subunit:Monomer.,tissue specificity:Testis specific.,
Cytoplasm .
Mainly found in round spermatids. Localized on the principle piece in the sperm (at protein level). Testis-specific. Expression significantly decreased in the testis of elderly men.