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Image of the (a) G*CT-FAF adduct in the B state (350°) and (b) G*CT-FAAF adduct in the B state (330°). The flipping G6 base is red licorice, the orphan C6 is blue licorice, adducts are atom-colored thick CPK and the reminder of the DNA is atom-colored thin CPK. (b) The arrow indicates the sugar moiety with which the acetyl or aryl moiety on FAAF is suggested to form a steric clash.
