Mutagenic specificity of endogenously generated abasic sites in Saccharomyces cerevisiae chromosomal DNA.


Abasic [apurinic/apyrimidinic (AP)] sites are common, noncoding DNA lesions. Despite extensive investigation, the mutational pattern they provoke in eukaryotic cells remains unresolved. We constructed Saccharomyces cerevisiae strains in which chromosomal AP sites were generated during normal cell growth by altered human uracil-DNA glycosylases that remove… (More)