1Y9H:
reference: Methylation of cytosine at C5 in a CpG sequence context causes a conformational switch of a benzo[a]pyrene diol epoxide-N2-guanine adduct in DNA from a minor groove alignment to intercalation with base displacement., Zhang N, Lin C, Huang X, Kolbanovskiy A, Hingerty BE, Amin S, Broyde S, Geacintov NE, Patel DJ, J Mol Biol 2005 Mar 4;346(4):951-65. Epub 2004 Dec 31. PMID: 15701509

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