1TKY:
reference: Achieving error-free translation; the mechanism of proofreading of threonyl-tRNA synthetase at atomic resolution., Dock-Bregeon AC, Rees B, Torres-Larios A, Bey G, Caillet J, Moras D, Mol Cell 2004 Nov 5;16(3):375-86. PMID: 15525511

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