Crossref journal-article
American Society for Cell Biology (ASCB)
Molecular Biology of the Cell (1076)
Abstract

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.

Bibliography

Palancade, B., Liu, X., Garcia-Rubio, M., Aguilera, A., Zhao, X., & Doye, V. (2007). Nucleoporins Prevent DNA Damage Accumulation by Modulating Ulp1-dependent Sumoylation Processes. Molecular Biology of the Cell, 18(8), 2912–2923.

Authors 6
  1. Benoit Palancade (first)
  2. Xianpeng Liu (additional)
  3. Maria Garcia-Rubio (additional)
  4. Andrès Aguilera (additional)
  5. Xiaolan Zhao (additional)
  6. Valérie Doye (additional)
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Dates
Type When
Created 18 years, 2 months ago (May 30, 2007, 9:10 p.m.)
Deposited 4 years ago (Aug. 14, 2021, 6:58 a.m.)
Indexed 3 weeks ago (Aug. 7, 2025, 4:23 p.m.)
Issued 18 years ago (Aug. 1, 2007)
Published 18 years ago (Aug. 1, 2007)
Published Print 18 years ago (Aug. 1, 2007)
Funders 0

None

@article{Palancade_2007, title={Nucleoporins Prevent DNA Damage Accumulation by Modulating Ulp1-dependent Sumoylation Processes}, volume={18}, ISSN={1939-4586}, url={http://dx.doi.org/10.1091/mbc.e07-02-0123}, DOI={10.1091/mbc.e07-02-0123}, number={8}, journal={Molecular Biology of the Cell}, publisher={American Society for Cell Biology (ASCB)}, author={Palancade, Benoit and Liu, Xianpeng and Garcia-Rubio, Maria and Aguilera, Andrès and Zhao, Xiaolan and Doye, Valérie}, editor={Weis, Karsten}, year={2007}, month=aug, pages={2912–2923} }