ArticleProceedings of the National Academy of Sciences of the United States of America2024
ATAD5 functions as a regulatory platform for Ub-PCNA deubiquitination.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Disrupting the USP1-UAF1 deubiquitinase complex: a master regulator of replication stress and frontier target in cancer therapy.Medical oncology (Northwood, London, England) · 2026Review
- USP1 inhibition: A journey from target discovery to clinical translation.Pharmacology & therapeutics · 2025Review
- Ubiquitin and SUMO pathways in DNA replication and replication-coupled repair.Critical reviews in biochemistry and molecular biologyReview
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Authors and funding
11 authors.
Funding
Abstract
Ubiquitination status of proliferating cell nuclear antigen (PCNA) is crucial for regulating DNA lesion bypass. After the resolution of fork stalling, PCNA is subsequently deubiquitinated, but the underlying mechanism remains undefined. We found that the N-terminal domain of ATAD5 (ATAD5-N), the largest subunit of the PCNA-unloading complex, functions as a scaffold for Ub-PCNA deubiquitination. ATAD5 recognizes DNA-loaded Ub-PCNA through distinct DNA-binding and PCNA-binding motifs. Furthermore, ATAD5 forms a heterotrimeric complex with UAF1-USP1 deubiquitinase, facilitating the deubiquitination of DNA-loaded Ub-PCNA. ATAD5 also enhances the Ub-PCNA deubiquitination by USP7 and USP11 through specific interactions. ATAD5 promotes the distinct deubiquitination process of UAF1-USP1, USP7, and USP11 for poly-Ub-PCNA. Additionally, ATAD5 mutants deficient in UAF1-binding had increased sensitivity to DNA-damaging agents. Our results ultimately reveal that ATAD5 and USPs cooperate to efficiently deubiquitinate Ub-PCNA prior to its release from the DNA in order to safely deactivate the DNA repair process.
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