Cover: Flanking amino groups act as steric guideposts in orienting benzo[a]pyrenyl-guanine lesions differently in mutational hot and cold spot sequences. Left: 50′- ···CG*GC ···; right: 5′- ···CGG*C···. See the paper by Rodríguez et al. (2007), Nucleic Acids Res., 35,1555-1568.
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