1VBM:
reference: Structural snapshots of the KMSKS loop rearrangement for amino acid activation by bacterial tyrosyl-tRNA synthetase., Kobayashi T, Takimura T, Sekine R, Kelly VP, Kamata K, Sakamoto K, Nishimura S, Yokoyama S, J Mol Biol. 2005 Feb 11;346(1):105-17. Epub 2004 Dec 15. PMID: 15663931

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