The enzyme <small>L</small>-arabinonolactonase (EC 3.1.1.15) catalyzes the reaction
This enzyme belongs to the family of hydrolases, specifically those acting on carboxylic ester bonds. The systematic name is <small>L</small>-arabinono-1,4-lactone lactonohydrolase. This enzyme participates in ascorbate and aldarate metabolism.