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Mte1 interacts with Mph1 and promotes crossover recombination and telomere maintenance

AuthorsSilva, Sonia; Lisby, Michael
DNA repair
Genome integrity
Telomere maintenance
Homologous recombination
Issue Date2016
PublisherCold Spring Harbor Laboratory Press
CitationGenes and Development 30(6): 700-717 (2016)
AbstractMph1 is a member of the conserved FANCM family of DNA motor proteins that play key roles in genome maintenance processes underlying Fanconi anemia, a cancer predisposition syndrome in humans. Here, we identify Mte1 as a novel interactor of the Mph1 helicase in Saccharomyces cerevisiae. In vitro, Mte1 (Mph1-associated telomere maintenance protein 1) binds directly to DNA with a preference for branched molecules such as D loops and fork structures. In addition, Mte1 stimulates the helicase and fork regression activities of Mph1 while inhibiting the ability of Mph1 to dissociate recombination intermediates. Deletion of MTE1 reduces crossover recombination and suppresses the sensitivity of mph1Δ mutant cells to replication stress. Mph1 and Mte1 interdependently colocalize atDNAdamage-induced foci and dysfunctional telomeres, and MTE1 deletion results in elongated telomeres. Taken together, our data indicate that Mte1 plays a role in regulation of crossover recombination, response to replication stress, and telomere maintenance.
DescriptionSilva, Sonia et al.
Publisher version (URL)https://doi.org/10.1101/gad.276204.115
Identifiersdoi: 10.1101/gad.276204.115
e-issn: 1549-5477
issn: 0890-9369
Appears in Collections:(CABIMER) Artículos
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