Glycerol Kinase is an enzyme in the liver that is important in glycerol metabolism.

It catalyzes the reaction below:

Glycerol + ATP <=> Glycerol-3-Phosphate + ADP + H⁺ 

Glycerol-3-phosphate, thus formed, can be oxidized to dihdroxyacetone phosphate by the enzyme glycerol-3-phosphate dehydrogenase.

See also: Glycerol Metabolism, Dihdroxyacetone Phosphate, Glycerol-3-Phosphate Dehydrogenase