Abstract:Photoirradiation and subsequent hot piperidine treatment of the duplex consisting of 5-methylcytosine ((m)C)-containing DNA and 9,10-anthraquinone (AQ)-tethered complementary oligodeoxynucleotide led to selective oxidative strand cleavage at the target (m)C site, whereas no strand cleavage was observed for the duplex containing normal cytosine instead of (m)C. Incorporation of an AQ sensitizer into the interior of a strand induced an enhanced one-electron photooxidation, presumably because of a much larger int… Show more
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