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Keyword: base excision repair (BER)


Base excision repair (BER) is the primary DNA repair pathway that corrects base lesions that arise due to oxidative, alkylation, deamination, and depurinatiation/depyrimidination damage. BER facilitates the repair of damaged DNA via two general pathways - short-patch (SP-BER) and long-patch (LP-BER). The shortpatch BER pathway leads to a repair tract of a single nucleotide. Alternatively, the long-patch BER pathway produces a repair tract of at least two nucleotides. The BER pathway is initiated by one of many DNA glycosylases, which recognize and catalyze the removal of damaged bases. The completion of the BER pathway is accomplished by the coordinated action of at least three additional enzymes. These downstream enzymes carry out strand incision, gap-filling and ligation.



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DNA damages
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