Plays a central role in 2-thiolation of mcm5S2U at tRNA wobble positions of tRNA(Lys), tRNA(Glu) and tRNA(Gln). Directly binds tRNAs and probably acts by catalyzing adenylation of tRNAs, an intermediate required for 2-thiolation. It is unclear whether it acts as a sulfurtransferase that transfers sulfur from thiocarboxylated URM1 onto the uridine of tRNAs at wobble position.
Yousef G.M., Submitted (APR-2003) to the EMBL/GenBank/DDBJ databases.
The MGC Project Team, Genome Res. 14:2121-2127(2004).
Beausoleil S.A., Nat. Biotechnol. 24:1285-1292(2006).