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Interplay of replication timing, DNA repair, and translesion synthesis in UV mutagenesis in yeast.

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School of Molecular Biosciences, Biotechnology Life Sciences, Washington State University, Pullman, WA, USA.

Replication timing during S-phase impacts mutation rates in yeast and human cancers; however, the exact mechanism involved remains unclear. Here, we analyze the impact of replication timing on UV mutagenesis in . Our analysis indicates that UV mutations are enriched in early-replicating regions of the genome in wild-type cells, but in cells deficient in global genomic-nucleotide excision repair (GG-NER), mutations are enriched in late-replicating regions.

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