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Replicative polymerases (Pols) arrest at damaged DNA nucleotides, which induces ubiquitination of the DNA sliding clamp PCNA (PCNA-Ub) and DNA damage signaling. PCNA-Ub is associated with the recruitment or activation of translesion synthesis (TLS) DNA polymerases of the Y family that can bypass the lesions, thereby rescuing replication and preventing replication fork collapse and consequent formation...
Yen1 is a nuclease identified in Saccharomyces cerevisiae that cleaves the Holliday junction (HJ) intermediate formed during homologous recombination. Alternative routes to disjoin HJs are performed by the Mus81/Mms4- and Sgs1/Top3/Rmi1-complexes. Here, we investigate the role of the Yen1 protein in the yeast Kluyveromyces lactis. We demonstrate that both yen1 mus81 and yen1 sgs1 double mutants displayed...
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