pea ( pisum sativum ) leaf chloroplastic and cytoplasmic 3-phosphoglycerate kinases ( atp : d-3-phosphoglycerate 1-phosphotransferase , ec 2.7.2.3 ) have similar michaelis constants for atp , 0.7 and 0.55 mm , for adp , 0.18 and 0.22 , and for 3-p-glycerate , 0.59 and 0.54 mm at low substrate concentrations , and 1.6 and 1.25 mm at high substrate concentrations .
C0031656
phosphoglycerate
C0031727
phosphotransferase