Catalysis of the reaction: a uridine in RNA = a pseudouridine in RNA. Conversion of uridine in an RNA molecule to pseudouridine by rotation of the C1'-N-1 glycosidic bond of uridine in RNA to a C1'-C5. [ GOC:mah https://www.rhea-db.org/rhea/48348 ]

This is just here as a test because I lose it