Polymerase δ replicates both strands after homologous recombination-dependent fork restart.

ABSTRACT: To maintain genetic stability, DNA must be replicated only once per cell cycle, and replication must be completed even when individual replication forks are inactivated. Because fork inactivation is common, passive convergence of an adjacent fork is insufficient to rescue all inactive forks. Thus, eukaryotic cells have evolved homologous recombination-dependent mechanisms to restart persistent inactive forks. Completing DNA synthesis via homologous recombination-restarted replication (HoRReR) ensures cell survival, but at a cost. One such cost is increased mutagenesis because HoRReR is more error prone than canonical replication. This increased error rate implies the HoRReR mechanism is distinct from that of a canonical fork. Here we demonstrate, in Schizosaccharomyces pombe, that a DNA se

SUBMITTER: Miyabe I 

PROVIDER: S-EPMC4655445 | biostudies-literature | 2015 Nov

REPOSITORIES: biostudies-literature