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Key van der Waals contacts between BP aromatic ring system and DNA residues. Stereo views of (A) the d(ATCG*CT)·d(AGCGAT) region of the 10S (+)-trans-anti-dG adduct and (B) the d(TCG*CTA)·d(TAGCGA) region of the 10R (−)-trans-anti-dG adduct with transparent van der Waals surfaces of relevant residues. The color scheme is given in the caption to Fig. 4. The structures are aligned to have the 5′ residue of the modified strand at top left.
