1ZJR:
reference: Structure of a class II TrmH tRNA-modifying enzyme from Aquifex aeolicus., Pleshe E, Truesdell J, Batey RT, Acta Crystallograph Sect F Struct Biol Cryst Commun. 2005 Aug 1;61(Pt, 8):722-8. Epub 2005 Jul 30. PMID: 16511140

This OCA Structure page
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