label: tRNA-uridine 2-sulfurtransferase activity
label_lc: trna-uridine 2-sulfurtransferase activity
description: "Catalysis of the reaction: AH2 + ATP + S-sulfanyl-L-cysteinyl-[protein] + uridine(34) in tRNA = 2-thiouridine(34) in tRNA + A + AMP + diphosphate + H+ + L-cysteinyl-[protein]."