Glycerol kinase
Glycerol kinase is a phosphotransferase enzyme involved in triglycerides and glycerophospholipids synthesis.
Glycerol kinase catalyzes the transfer of a phosphate from ATP to glycerol thus forming glycerol 3-phosphate:
Adipocytes lack glycerol kinase so they cannot metabolize the glycerol produced during triacyl glycerol degradation. This glycerol is instead shuttled to the liver via the blood where it is: