TRNA-pseudouridine synthase I
In enzymology, a tRNA-pseudouridine synthase I (EC 5.4.99.12) is an enzyme that catalyzes the chemical reaction tRNA uridine ⇌ {\displaystyle \rightleftharpoons } tRNA pseudouridine Hence, this enzyme has one substrate, tRNA uridine, and one product, tRNA pseudouridine. This enzyme belongs to the family of isomerases, specifically those intramolecular transferases transferring other groups.
Source: Wikipedia — TRNA-pseudouridine synthase I (CC BY-SA 4.0)