ArticleThe EMBO journal2024
ATR limits Rad18-mediated PCNA monoubiquitination to preserve replication fork and telomerase-independent telomere stability.
Article in The EMBO journal, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed, 17 citations in OpenAlex.
- An updated view on lagging strand DNA replication: implications for the replication stress response.Cell cycle (Georgetown, Tex.) · 2026Article
- USP1 inhibition promotes RAD18-dependent PCNA degradation and BRCA1 synthetic lethality.bioRxiv : the preprint server for biology · 2026Article
- Article
- Budding Yeast Ubiquitin Ligases Rad5 and Rad18 Bind a Novel PCNA Surface, which Is Required for their Functions in DNA-Damage Tolerance.International journal of biological sciences · 2026Article
- Ubiquitination in cancer: mechanisms and therapeutic opportunities.Cancer communications (London, England) · 2025Review
- RAD18 methylation by the methyltransferase SETD6 attenuates DNA breaks.Scientific reports · 2025Article
- Synthetic Lethality-Based Targets and Their Exploration in Tumour Combination Strategies.Journal of cellular and molecular medicine · 2025Review
- Cell Type Specific Suppression of Hyper-Recombination by Human RAD18 Is Linked to Proliferating Cell Nuclear Antigen K164 Ubiquitination.Biomolecules · 2025Article
- DNA damage repair factor Rad18 controls virulence partially via transcriptional suppression of genesVirulence · 2024Article
- KDM6A-SND1 interaction maintains genomic stability by protecting the nascent DNA and contributes to cancer chemoresistance.Nucleic acids research · 2024Article
- The involvement of cyclin-dependent kinase 7 (CDK7) and 9 (CDK9) in coordinating transcription and cell cycle checkpoint regulation.Cell cycle (Georgetown, Tex.)Review
- Ubiquitin and SUMO pathways in DNA replication and replication-coupled repair.Critical reviews in biochemistry and molecular biologyReview
Corrections and comments
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Authors and funding
4 authors at 4 institutions in 1 country.
Funding
Abstract
Upon replication fork stalling, the RPA-coated single-stranded DNA (ssDNA) formed behind the fork activates the ataxia telangiectasia-mutated and Rad3-related (ATR) kinase, concomitantly initiating Rad18-dependent monoubiquitination of PCNA. However, whether crosstalk exists between these two events and the underlying physiological implications of this interplay remain elusive. In this study, we demonstrate that during replication stress, ATR phosphorylates human Rad18 at Ser403, an adjacent residue to a previously unidentified PIP motif (PCNA-interacting peptide) within Rad18. This phosphorylation event disrupts the interaction between Rad18 and PCNA, thereby restricting the extent of Rad18-mediated PCNA monoubiquitination. Consequently, excessive accumulation of the tumor suppressor protein SLX4, now characterized as a novel reader of ubiquitinated PCNA, at stalled forks is prevented, contributing to the prevention of stalled fork collapse. We further establish that ATR preserves telomere stability in alternative lengthening of telomere (ALT) cells by restricting Rad18-mediated PCNA monoubiquitination and excessive SLX4 accumulation at telomeres. These findings shed light on the complex interplay between ATR activation, Rad18-dependent PCNA monoubiquitination, and SLX4-associated stalled fork processing, emphasizing the critical role of ATR in preserving replication fork stability and facilitating telomerase-independent telomere maintenance.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.