3CJZ:
reference: Effects of N2,N2-dimethylguanosine on RNA structure and stability: crystal structure of an RNA duplex with tandem m2 2G:A pairs., Pallan PS, Kreutz C, Bosio S, Micura R, Egli M, RNA. 2008 Oct;14(10):2125-35. Epub 2008 Sep 4. PMID: 18772248

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