3V8V:
reference: Structure of the bifunctional methyltransferase YcbY (RlmKL) that adds the m7G2069 and m2G2445 modifications in Escherichia coli 23S rRNA., Wang KT, Desmolaize B, Nan J, Zhang XW, Li LF, Douthwaite S, Su XD, Nucleic Acids Res. 2012 Jun;40(11):5138-48. doi: 10.1093/nar/gks160. Epub 2012, Feb 22. PMID: 22362734

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