Escherichia coli tRNA 2-selenouridine synthase (SelU) converts S2U-RNA to Se2U-RNA via S-geranylated-intermediate. - Sierant M; Leszczynska G; Sadowska K; Komar P; Radzikowska-Cieciura E; Sochacka E; Nawrot B (FEBS letters, 2018)