label: snRNA pseudouridine synthase activity
label_lc: snrna pseudouridine synthase activity
description: "Catalysis of the reaction: uridine in snRNA = pseudouridine in snRNA. Conversion of uridine in an snRNA molecule to pseudouridine by rotation of the C1'-N-1 glycosidic bond of uridine in RNA to a C1'-C5."