Uridine Nucleosidase

In enzymology, an uridine nucleosidase (EC 3.2.2.3) is an enzyme that catalyzes the chemical reaction

uridine + H₂O D-ribose + uracil

Thus, the two substrates of this enzyme are uridine and H₂O, whereas its two products are D-ribose and uracil.

This enzyme belongs to the family of hydrolases, specifically those glycosylases that hydrolyse N-glycosyl compounds. The systematic name of this enzyme class is uridine ribohydrolase. This enzyme is also called uridine hydrolase. This enzyme participates in pyrimidine metabolism.