4AS1:
reference: Structural dynamics of the aminoacylation and proofreading functional cycle of bacterial leucyl-tRNA synthetase., Palencia A, Crepin T, Vu MT, Lincecum TL Jr, Martinis SA, Cusack S, Nat Struct Mol Biol. 2012 Jun 10. doi: 10.1038/nsmb.2317. PMID: 22683997

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