153D:
reference: Crystal structure of a mispaired dodecamer, d(CGAGAATTC(O6Me)GCG)2, containing a carcinogenic O6-methylguanine., Ginell SL, Vojtechovsky J, Gaffney B, Jones R, Berman HM, Biochemistry 1994 Mar 29;33(12):3487-93. PMID: 8142345

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