Cited by 204Genomics and Chromatin DynamicsUbiquitin and proteasome pathwaysCancer-related Molecular Pathways

The RING domain of Mdm2 mediates histone ubiquitylation and transcriptional repression

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Minsky, Neri, Oren, Moshe·2004·Molecular Cell

Abstract

Histone modifications play a pivotal role in regulating transcription and other chromatin-associated processes. In yeast, histone H2B monoubiquitylation affects gene silencing. However, mammalian histone ubiquitylation remains poorly understood. We report that the Mdm2 oncoprotein, a RING domain E3 ubiquitin ligase known to ubiquitylate the p53 tumor suppressor protein, can interact directly with histones and promote in vitro monoubiquitylation of histones H2A and H2B. Moreover, Mdm2 induces H2B monoubiquitylation in vivo. Endogenous Mdm2 is tethered in vivo, presumably via p53, to chromatin comprising the p53-responsive p21(waf1) promoter, and Mdm2 overexpression enhances protein ubiquitylation in the vicinity of a p53 binding site within that promoter. Moreover, when recruited to a promoter in the absence of p53, Mdm2 can repress transcription dependently on its RING domain, suggesting that its E3 activity contributes to repression. Histone ubiquitylation may thus constitute a novel mechanism of transcriptional repression by Mdm2, possibly underlying some of its oncogenic activities.

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Crossref · 10.1016/j.molcel.2004.10.016

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  • Mdm2 can transcriptionally inactivate some p53 target genes by direct ubiquitylation of histones.

    “For example, Mdm2 can transcriptionally inactivate some p53 target genes by direct ubiquitylation of histones [109].”

    From The p53 orchestra: Mdm2 and Mdmx set the tone (2010) · cites this paper as [109]

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Authors
Minsky, N., & Oren, M.
Affiliations
Weizmann Institute of Science (IL)
Corresponding author
Oren, Moshe
Venue
Molecular Cell
Publisher
Elsevier BV
Published
2004-11
Volume
16
Issue
4
Pages
631-639
ISSN
1097-2765 (ISSN-L)
OpenAlex
W1999310200
Cited by
204
References
54
Citations by year
2026: 1 · 2025: 3 · 2024: 3 · 2023: 4 · 2022: 2 · 2021: 6 · 2020: 8 · 2019: 13 · 2018: 6 · 2017: 1 · 2016: 7 · 2015: 13 · 2014: 10 · 2013: 5 · 2012: 12
FWCI
4.75
Type
journal article
Language
en
Open access
Locations
  • Molecular Cell (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Cancer Institute (R37 CA40099, R37CA040099)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ubiquitin and proteasome pathways
  • Health Sciences › Medicine › Oncology › Cancer-related Molecular Pathways
Keywords
MDM2, RING domain, E3 ubiquitin ligase, histone ubiquitination, histone H2A, transcriptional repression, p53, chromatin, gene silencing, oncogenic activity
MeSH terms
Cell Line, Chromatin, Glutathione Transferase, Histones, Humans, Luciferases, Nuclear Proteins, Precipitin Tests, Promoter Regions, Genetic, Proto-Oncogene Proteins, Recombinant Fusion Proteins, Transcription, Genetic, Ubiquitins, Gene Expression Regulation, Neoplastic, Genes, Reporter, Cell Line, Tumor, Chromatin Immunoprecipitation, Proto-Oncogene Proteins c-mdm2

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