The enzyme gluconolactonase (EC 3.1.1.17) catalyzes the reaction This enzyme belongs to the family of hydrolases, specifically those acting on carboxylic ester bonds.

The systematic name is D-glucono-1,5-lactone lactonohydrolase.

Other names in common use include lactonase, aldonolactonase, glucono-δ-lactonase, and gulonolactonase.

This enzyme participates in three metabolic pathways: pentose phosphate pathway, ascorbate and aldarate metabolism, and caprolactam degradation.

This EC 3.1 enzyme-related article is a stub.