3DSQ:
reference: Structure of Desulfitobacterium hafniense PylSc, a pyrrolysyl-tRNA synthetase., Lee MM, Jiang R, Jain R, Larue RC, Krzycki J, Chan MK, Biochem Biophys Res Commun. 2008 Sep 26;374(3):470-4. Epub 2008 Jul 24. PMID: 18656445

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