3FOC:
reference: The structure of tryptophanyl-tRNA synthetase from Giardia lamblia reveals divergence from eukaryotic homologs., Arakaki TL, Carter M, Napuli AJ, Verlinde CL, Fan E, Zucker F, Buckner FS, Van Voorhis WC, Hol WG, Merritt EA, J Struct Biol. 2010 Aug;171(2):238-43. Epub 2010 May 8. PMID: 20438846

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