3C0K:
reference: Crystal structure of the Escherichia coli 23S rRNA:m5C methyltransferase RlmI (YccW) reveals evolutionary links between RNA modification enzymes., Sunita S, Tkaczuk KL, Purta E, Kasprzak JM, Douthwaite S, Bujnicki JM, Sivaraman J, J Mol Biol. 2008 Nov 14;383(3):652-66. Epub 2008 Aug 29. PMID: 18789337

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