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Structure of the hydrocarbon inserts in DNA and of the DNA sequence at the gap-lesion region. (A) The structures of the –(CH2)3-(M3) and –(CH2)12-(M12) inserts in DNA. The two flanking nucleotides are also shown. (B) The DNA sequences at the gap region in gap-lesion plasmids GP21 and GP51. X represents the hydrocarbon insert.
