Limonin D ring lactonase

In enzymology, a limonin-D-ring-lactonase (EC 3.1.1.36) is an enzyme that catalyzes the chemical reaction

Thus, the two substrates of this enzyme are limonoate D-ring-lactone and H₂O, whereas its product is limonoate.

This enzyme belongs to the family of hydrolases, specifically those acting on carboxylic ester bonds. The systematic name of this enzyme class is limonoate-D-ring-lactone lactonohydrolase. Other names in common use include limonin-D-ring-lactone hydrolase, and limonin lactone hydrolase.