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Nucleobases methylated at the glycosidic nitrogen atom achieve DNA-specific self-assembly upon heating in the solid state. We report formation and characterisation of the elusive cocrystal of methylated guanine and methylated cytosine, exhibiting Watson-Crick-type hydrogen bonding, and the crystal structure of 9-methylguanine.
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Stolar et al. (2020) studied this question.
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