PreprintCited by 3DNA Repair MechanismsUbiquitin and proteasome pathwaysMicrotubule and mitosis dynamics

USP37 prevents premature disassembly of stressed replisomes by TRAIP

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Kochenova, Olga V., D’Alessandro, Giuseppina, Pilger, Domenic, Schmid, Ernst, Richards, Sean L., Garcia, Marcos Rios, Jhujh, Satpal S., Voigt, Andrea +7 more·2024·bioRxiv (Cold Spring Harbor Laboratory)

Preprint — published as 10.1038/s41467-025-60139-z · Paper page

Abstract

The E3 ubiquitin ligase TRAIP associates with the replisome and helps this molecular machine deal with replication stress. Thus, TRAIP promotes DNA inter-strand crosslink repair by triggering the disassembly of CDC45-MCM2-7-GINS (CMG) helicases that have converged on these lesions. However, disassembly of single CMGs that have stalled temporarily would be deleterious, suggesting that TRAIP must be carefully regulated. Here, we demonstrate that human cells lacking the de-ubiquitylating enzyme USP37 are hypersensitive to topoisomerase poisons and other replication stress-inducing agents. We further show that TRAIP loss rescues the hypersensitivity of USP37 knockout cells to topoisomerase inhibitors. In Xenopus egg extracts depleted of USP37, TRAIP promotes premature CMG ubiquitylation and disassembly when converging replisomes stall. Finally, guided by AlphaFold-Multimer, we discovered that binding to CDC45 mediates USP37’s response to topological stress. In conclusion, we propose that USP37 protects genome stability by preventing TRAIP-dependent CMG unloading when replication stress impedes timely termination.

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Authors
Kochenova, O. V., D’Alessandro, G., Pilger, D., Schmid, E., Richards, S. L., Garcia, M. R., Jhujh, S. S., Voigt, A., Gupta, V., Carnie, C. J., Wu, R. A., Gueorguieva, N., Stewart, G. S., Walter, J. C., & Jackson, S. P.
Affiliations
  • Howard Hughes Medical Institute (US)
  • Cancer Research UK (GB)
  • University of Cambridge (GB)
  • Harvard University (US)
  • University of Birmingham (GB)
Corresponding author
  • Walter, Johannes C.
  • Jackson, Stephen P.
Venue
bioRxiv (Cold Spring Harbor Laboratory)
Publisher
openRxiv
Published
2024-09-04
OpenAlex
W4402285827
Cited by
3
References
67
Citations by year
2025: 3
Type
posted content
Language
en
Open access
Locations
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • PubMed Central (submittedVersion, cc-by-nc-nd)
  • Apollo (University of Cambridge) (submittedVersion, cc-by)
Funders
  • Cancer Research UK (DRCPGM\100005, C17183/A23303, 29580)
  • European Commission (800924, HORIZON2020)
  • Associazione Italiana per la Ricerca sul Cancro (800924)
  • National Institutes of Health
  • Cancer Research UK Cambridge Institute, University of Cambridge
  • National Heart, Lung, and Blood Institute (R01HL098316)
  • H2020 European Research Council (855741)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ubiquitin and proteasome pathways
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Microtubule and mitosis dynamics
Keywords
USP37, TRAIP, replication stress, CMG helicase, Cdc45, topoisomerase inhibitors, genome stability, topological stress, Xenopus egg extracts

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