1FYF:
reference: Transfer RNA-mediated editing in threonyl-tRNA synthetase. The class II solution to the double discrimination problem., Dock-Bregeon A, Sankaranarayanan R, Romby P, Caillet J, Springer M, Rees B, Francklyn CS, Ehresmann C, Moras D, Cell 2000 Dec 8;103(6):877-84. PMID: 11136973

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