Mec1 and Rad53 inhibit formation of single-stranded DNA at telomeres of Saccharomyces cerevisiae cdc13-1 mutants.

Abstract excerpt

Here we examine the roles of budding-yeast checkpoint proteins in regulating degradation of dsDNA to ssDNA at unprotected telomeres (in Cdc13 telomere-binding protein defective strains). We find that Rad17, Mec3, as well as Rad24, members of the putative checkpoint clamp loader (Rad24) and sliding clamp (Rad17, Mec3) complexes, are important for promoting degradation of dsDNA in and near telomere repeats. We find...

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