The oxidatively induced DNA lesions 8,5'-cyclo-2'-deoxyadenosine and 8-hydroxy-2'-deoxyadenosine are strongly resistant to acid-induced hydrolysis of the glycosidic bond.


The 8,5'-cyclopurine-2'-deoxynucleosides (cPu) are unique oxidatively induced DNA lesions in that they are specifically repaired by NER. In the absence of NER, a possible mechanism for cPu removal is spontaneous glycosidic bond hydrolysis followed by enzymic processing. Such a mechanism could be significant if the glycosidic bond in cPu were substantially… (More)


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