Description_x000D_ Biochem/physiol Actions_x000D_ Glycerol kinase catalyzes tge MgATP-dependent phosphorylation of glycerol to produce sn-glycerol-3-phosphate and is the rate limiting enzyme in the utilization of glycerol. It is also subject to feedback regulation by fructose-1,6-bisphosphate._x000D_ Unit Definition_x000D_ One unit will convert 1.0 μmole of glycerol and ATP to L-α-glycerophosphate and ADP per min at pH 9.8 at 25 °C in a coupled system with PK/LDH._x000D_ Physical form_x000D_ Stabilized solution in Tris buffer, pH 7.3