Aryl acylamidase

In enzymology, an aryl-acylamidase (EC 3.5.1.13) is an enzyme that catalyzes the chemical reaction

Thus, the two substrates of this enzyme are anilide and H₂O, whereas its two products are carboxylate and aniline.

This enzyme belongs to the family of hydrolases, those acting on carbon-nitrogen bonds other than peptide bonds, specifically in linear amides. The systematic name of this enzyme class is aryl-acylamide amidohydrolase. Other names in common use include AAA-1, AAA-2, brain acetylcholinesterase (is associated with AAA-2), and pseudocholinesterase (associated with arylacylamidase).