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Nucleoporins Prevent DNA Damage Accumulation by Modulating Ulp1-dependent Sumoylation Processes

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dc.creator Palancade, Benoit
dc.creator Xianpeng, Liu
dc.creator García-Rubio, María L.
dc.creator Aguilera, Andrés
dc.creator Xiaolan, Zhao
dc.creator Doye, Valérie
dc.date 2008-05-07T20:02:55Z
dc.date 2008-05-07T20:02:55Z
dc.date 2007-08
dc.date.accessioned 2017-01-31T01:11:51Z
dc.date.available 2017-01-31T01:11:51Z
dc.identifier Molecular Biology of the Cell, 18(8): 2912–2923 (2007).
dc.identifier 1059-1524
dc.identifier http://hdl.handle.net/10261/4080
dc.identifier 10.1091/mbc.E07-02-0123
dc.identifier.uri http://dspace.mediu.edu.my:8181/xmlui/handle/10261/4080
dc.description 12 páginas, 6 figuras, 1 tabla.
dc.description Increasing evidences suggest that nuclear pore complexes (NPCs) control different aspects of nuclear metabolism, including transcription, nuclear organization, and DNA repair. We previously established that the Nup84 complex, a major NPC building block, is part of a genetic network involved in DNA repair. Here, we show that double-strand break (DSB) appearance is linked to a shared function of the Nup84 and the Nup60/Mlp1–2 complexes. Mutants within these complexes exhibit similar genetic interactions and alteration in DNA repair processes as mutants of the SUMO-protease Ulp1. Consistently, these nucleoporins are required for maintenance of proper Ulp1 levels at NPCs and for the establishment of the appropriate sumoylation of several cellular proteins, including the DNA repair factor Yku70. Moreover, restoration of nuclear envelope-associated Ulp1 in nucleoporin mutants reestablishes proper sumoylation patterns and suppresses DSB accumulation and genetic interactions with DNA repair genes. Our results thus provide a molecular mechanism that underlies the connection between NPC and genome stability.
dc.description This research was supported by a collaborative program between the Institut Curie and the Commissariat à l’Energie Atomique (PIC Paramètres Epigénétiques grant to V.D.), the Ligue Nationale contre le Cancer (Equipe Labeliseé 2006 to V.D.), the Association pour la Recherche contre le Cancer (ARC to V.D.), the Ministère de l’Education Nationale, de la Recherche et de l’Enseignement Supérieur (A.C.I. "Jeunes chercheurs" to V.D.), a Cancer Center Support Grant (NCI P30 CA-08478-41 to X.Z.), and the Ministry of Science and Education of Spain (grant SAF2003-00204 to A.A.). B.P. was supported by postdoctoral fellowships from ARC and Fondation Pour la Recherche Médicale.
dc.description Peer reviewed
dc.format 1832837 bytes
dc.format application/pdf
dc.language eng
dc.publisher American Society for Cell Biology
dc.relation http://dx.doi.org/10.1091/mbc
dc.rights openAccess
dc.subject Nuclear Pore Complexes (NPCs)
dc.subject Nuclear metabolism
dc.subject DNA repair
dc.subject Sumoylation processes
dc.title Nucleoporins Prevent DNA Damage Accumulation by Modulating Ulp1-dependent Sumoylation Processes
dc.type Artículo


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