3TM5:
reference: Crystal structures of the tRNA:m2G6 methyltransferase Trm14/TrmN from two domains of life., Fislage M, Roovers M, Tuszynska I, Bujnicki JM, Droogmans L, Versees W, Nucleic Acids Res. 2012 Feb 22. PMID: 22362751

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