Adduct formation between oxanine and amine derivatives.

2001 
Oxanine (Oxa) is a major guanine lesion produced by nitric oxide (NO) under aerobic conditions. To elucidate the genotoxic mechanism of Oxa, this lesion was site-specifically incorporated into an oligonucleotide and allowed to react with cellular amines. Analysis of the reaction product revealed that Oxa formed adducts with spermidine and lysine, suggesting a novel genotoxic mechanism associated with NO-induced DNA damage.
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