A<unk>  is a water-soluble enzyme that catalyzes the hydrolysis of ester bonds in water–insoluble, lipid substrates.<unk> s thus comprise a subclass of the esterases.<unk> s are ubiquitous throughout living organisms, and genes encoding<unk> s are even present in certain viruses.
Lipase
Amylase
Lipoprotein
Aspartate transaminase
Apolipoprotein
Albumin
Gamma-glutamyl transpeptidase
Acute phase protein