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  • Title: Facially-selective thymine-thymine photodimerization in TTT triads.
    Author: Neelakandan PP, Pan Z, Hariharan M, Lewis FD.
    Journal: Photochem Photobiol Sci; 2012 Jun; 11(6):889-92. PubMed ID: 22580641.
    Abstract:
    Irradiation of alkane-linked DNA hairpins possessing TTT steps with flanking purine bases yields products identified as the cis-syn (2 + 2) dimers formed between the central thymine and its 3'- and 5'-neighbors. Selective formation of the 3'-dimer is attributed to ground state conformational effects and electron transfer quenching by purine bases.
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