Acetylsalicylate deacetylase

In enzymology, an acetylsalicylate deacetylase (EC 3.1.1.55) is an enzyme that catalyzes the chemical reaction

Thus, the two substrates of this enzyme are acetylsalicylate and H₂O, whereas its two products are salicylate and acetate.

This enzyme belongs to the family of hydrolases, specifically those acting on carboxylic ester bonds. The systematic name of this enzyme class is acetylsalicylate O-acetylhydrolase. Other names in common use include aspirin esterase, aspirin esterase, acetylsalicylic acid esterase, and aspirin hydrolase.