Function
Involved in the post-transcriptional modification of the uridine at the wobble position (U34) of tRNA(Lys), tRNA(Glu) and tRNA(Gln) (PubMed:14594807, PubMed:22983156, PubMed:24971911, PubMed:29862510). Catalyzes the conversion of 2-thiouridine (S2U-RNA) to 2-selenouridine (Se2U-RNA) (PubMed:14594807, PubMed:24971911, PubMed:29862510). Acts in a two-step process involving geranylation of 2-thiouridine (S2U) to S-geranyl-2-thiouridine (geS2U) and subsequent selenation of the latter derivative to 2-selenouridine (Se2U) in the tRNA chain (PubMed:24971911, PubMed:29862510).
Sequence
MQERHTEQDYRALLIADTPIIDVRAPIEFEHGAMPAAINLPLMNNDERAAVGTCYKQQGSDAALALGHKLVAGEIRQQRMDAWRAACLQNPQGILCCARGGQRSHIVQSWLHAAGIDYPLVEGGYKALRQTAIQATIELAQKPIVLIGGCTGSGKTLLVQQQPNGVDLEGLARHRGSAFGRTLQPQLSQASFENLLAAEMLKTDARQNLRLWVLEDESRMIGSNHLPECLRERMTQAAIAVVEDPFEIRLERLNEEYFLRMHHDFTHAYGDEQGWQEYCEYLHHGLSAIKRRLGLQRYNELAARLDAALTTQLTTGSTDGHLAWLVPLLEEYYDPMYRYQLEKKAEKVVFRGEWAEVAEWVKAR