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Università della Svizzera italiana

Restoration of replication fork stability in BRCA1- and BRCA2-deficient cells by inactivation of SNF2-family fork remodelers

Taglialatela, Angelo ; Alvarez, Silvia ; Leuzzi, Giuseppe ; Sannino, Vincenzo ; Ranjha, Lepakshi ; Huang, Jen-Wei ; Madubata, Chioma ; Anand, Roopesh ; Levy, Brynn ; Rabadan, Raul ; Cejka, Petr ; Costanzo, Vincenzo ; Ciccia, Alberto

In: Molecular Cell, 2017, vol. 68, no. 2, p. 414-430.e8

To ensure the completion of DNA replication and maintenance of genome integrity, DNA repair factors protect stalled replication forks upon replication stress. Previous studies have identified a critical role for the tumor suppressors BRCA1 and BRCA2 in preventing the degradation of nascent DNA by the MRE11 nuclease after replication stress. Here we show that depletion of SMARCAL1, a...

Università della Svizzera italiana

NBS1 promotes the endonuclease of the MRE11-RAD50 complex by sensing CtIP phosphorylation

Anand, Roopesh ; Jasrotia, Arti ; Bundschuh, Diana ; Howard, Sean Michael ; Ranjha, Lepakshi ; Stucki, Manuel ; Cejka, Petr

In: The EMBO Journal, 2019, vol. 38, no. 7, p. e101005

DNA end resection initiates DNA break repair by homologous recombination. MRE11-RAD50-NBS1 and phosphorylated CtIP perform the first resection step by MRE11-catalyzed endonucleolytic DNA cleavage. Human NBS1, more than its Xrs2 homologue from Saccharomyces cerevisiae, is crucial for this process, highlighting complex mechanisms that regulate the MRE11 nuclease in high eukaryotes. Using a...

2 results 1