Pyrophosphatases

**Definition:** A group of enzymes within the class EC 3.6.1.- that catalyze the hydrolysis of diphosphate bonds, chiefly in nucleoside di- and triphosphates. They may liberate either a mono- or diphosphate. EC 3.6.1.-.

**Tree numbers:** - D08.811.277.040.600

**Synonyms:** - Pyrophosphatase