Undecaprenyl diphosphatase

In enzymology, an undecaprenyl-diphosphatase (EC 3.6.1.27) is an enzyme that catalyzes the chemical reaction

Thus, the two substrates of this enzyme are undecaprenyl diphosphate and H₂O, whereas its two products are undecaprenyl phosphate and phosphate.

This enzyme belongs to the family of hydrolases, specifically those acting on acid anhydrides in phosphorus-containing anhydrides. The systematic name of this enzyme class is undecaprenyl-diphosphate phosphohydrolase. Other names in common use include C55-isoprenyl diphosphatase, C55-isoprenyl pyrophosphatase, and isoprenyl pyrophosphatase. This enzyme participates in peptidoglycan biosynthesis.