2YXN:
reference: Functional replacement of the endogenous tyrosyl-tRNA synthetase-tRNATyr pair by the archaeal tyrosine pair in Escherichia coli for genetic code expansion., Iraha F, Oki K, Kobayashi T, Ohno S, Yokogawa T, Nishikawa K, Yokoyama S, Sakamoto K, Nucleic Acids Res. 2010 Jun;38(11):3682-91. Epub 2010 Feb 16. PMID: 20159998

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