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Structures of (A) (+)- and (−)-anti-BPDE and (B) 10S (+)- and 10R (−)-trans-anti -[BP]-N2-dG adducts. Torsion angles α′ and β′ are defined as: α′, N1–C2–N2–C10(BP); β′, C2–N2–C10(BP)–C9(BP). (C) Sequence context in the NMR solution structures (Cosman et al., 1992; de los Santos et al., 1992), where G*6 is the modified guanine.
