Cited by 165Epigenetics and DNA MethylationUbiquitin and proteasome pathwaysCancer-related gene regulation

Molecular mechanism for USP7-mediated DNMT1 stabilization by acetylation.

Open access
Cheng, Jingdong, Yang, Huirong, Fang, Jian, Ma, Lixiang, Gong, Rui, Wang, Ping, Li, Ze, Xu, Yanhui·2015·Nature Communications

Abstract

DNMT1 is an important epigenetic regulator that plays a key role in the maintenance of DNA methylation. Here we determined the crystal structure of DNMT1 in complex with USP7 at 2.9 Å resolution. The interaction between the two proteins is primarily mediated by an acidic pocket in USP7 and Lysine residues within DNMT1’s KG linker. This intermolecular interaction is required for USP7-mediated stabilization of DNMT1. Acetylation of the KG linker Lysine residues impair DNMT1–USP7 interaction and promote the degradation of DNMT1. Treatment with HDAC inhibitors results in an increase in acetylated DNMT1 and decreased total DNMT1 protein. This negative correlation is observed in differentiated neuronal cells and pancreatic cancer cells. Our studies reveal that USP7-mediated stabilization of DNMT1 is regulated by acetylation and provide a structural basis for the design of inhibitors, targeting the DNMT1–USP7 interaction surface for therapeutic applications.

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  • The UBL 1-2 domains contain the second major substrate recognition site for USP7 substrates.

    “Outside of the TRAF-like domain, the UBL 1–2 domains contain the second major substrate recognition site for USP7 substrates.”

    From USP7 Is a Master Regulator of Genome Stability (2020) · cites this paper as Cheng et al., 2015

  • The UBL 1-2 acidic interface interacts with a highly basic motif (R/KxKxxxK) within USP7 substrates including UHRF1, DNMT1 and RNF169.

    “This acidic interface interacts with a highly basic motif (R/KxKxxxK) within USP7 substrates that include UHRF1 (Zhang et al., 2015), DNMT1 (Cheng et al., 2015) and RNF169 (An et al., 2017; Figure 1 and Table 1).”

    From USP7 Is a Master Regulator of Genome Stability (2020) · cites this paper as Cheng et al., 2015

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Authors
Cheng, J., Yang, H., Fang, J., Ma, L., Gong, R., Wang, P., Li, Z., & Xu, Y.
Affiliations
Shanghai Medical College of Fudan University (CN)
Corresponding author
Xu, Yanhui
Venue
Nature Communications
Published
2015-05-11
Volume
6
Issue
1
Pages
7023-7023
ISSN
2041-1723 (ISSN-L)
OpenAlex
W2227012542
Cited by
158
References
52
Citations by year
2026: 9 · 2025: 14 · 2024: 10 · 2023: 15 · 2022: 17 · 2021: 14 · 2020: 19 · 2019: 22 · 2018: 18 · 2017: 10 · 2016: 9 · 2015: 1
FWCI
5.50
Type
journal article
Language
en
Open access
Locations
  • Nature Communications (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
Funders
  • Salt Science Research Foundation
  • National Natural Science Foundation of China (91419301, U1432242, 31270779, 31425008, 31100526)
  • Fudan University
  • Science and Technology Commission of Shanghai Municipality
  • Program of Shanghai Subject Chief Scientist
  • National Key Research and Development Program of China (2011CB965300)
  • National Key New Drug Creation and Manufacturing Program, Ministry of Science and Technology (2014ZX09507-002)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Epigenetics and DNA Methylation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ubiquitin and proteasome pathways
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cancer-related gene regulation
Keywords
DNMT1, USP7, protein acetylation, protein stabilization, protein-protein interaction, DNA methylation, epigenetic regulation, lysine acetylation, histone deacetylase inhibitors, protein degradation, crystal structure, neurons, pancreatic cancer cells
MeSH terms
Ubiquitin-Specific Peptidase 7, Acetylation, Crystallization, Gene Expression Regulation, Humans, Models, Molecular, Mutation, Protein Conformation, Repressor Proteins, Ubiquitin Thiolesterase, Cell Line, Tumor

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