Cited by 653Cancer-related Molecular PathwaysUbiquitin and proteasome pathwaysHeat shock proteins research

MDM2 — master regulator of the p53 tumor suppressor protein

Momand, Jamil, Wu, Hsiao-Huei, Dasgupta, Gargi·2000·Gene

Abstract

MDM2 is an oncogene that mainly functions to modulate p53 tumor suppressor activity. In normal cells the MDM2 protein binds to the p53 protein and maintains p53 at low levels by increasing its susceptibility to proteolysis by the 26S proteosome. Immediately after the application of cellular stress, the ability of MDM2 to bind to p53 is blocked or altered in a fashion that prevents MDM2-mediated degradation. As a result, p53 levels rise, causing cell cycle arrest or apoptosis. In this review, we present evidence for the existence of three highly conserved regions (CRs) shared by MDM2 proteins and MDMX proteins of different species. These highly conserved regions encompass residues 42-94 (CR1), 301-329 (CR2), and 444-483 (CR3) on human MDM2. These three domains are respectively important for binding p53, for binding the retinoblastoma protein, and for transferring ubiquitin to p53. This review discusses the major milestones uncovered in MDM2 research during the past 12 years and potential uses of this knowledge in the fight against cancer.

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Crossref · 10.1016/s0378-1119(99)00487-4

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Authors
Momand, J., Wu, H.-H., & Dasgupta, G.
Affiliations
California State University Los Angeles (US)
Corresponding author
Momand, Jamil
Venue
Gene
Publisher
Elsevier BV
Published
2000-01
Volume
242
Issue
1-2
Pages
15-29
ISSN
0378-1119 (ISSN-L)
OpenAlex
W1973821009
Cited by
641
References
144
Citations by year
2026: 6 · 2025: 11 · 2024: 17 · 2023: 19 · 2022: 24 · 2021: 10 · 2020: 17 · 2019: 16 · 2018: 22 · 2017: 14 · 2016: 17 · 2015: 31 · 2014: 21 · 2013: 21 · 2012: 24
FWCI
4.03
Type
journal article
Language
en
Open access
closed
Locations
  • Gene (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Oncology › Cancer-related Molecular Pathways
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ubiquitin and proteasome pathways
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Heat shock proteins research
Keywords
MDM2, p53, tumor suppressor regulation, MDMX, conserved domains, p53 ubiquitination, proteasomal degradation, cell cycle arrest, apoptosis, oncogenes, cancer therapy
MeSH terms
Amino Acid Sequence, Animals, Gene Expression Regulation, Humans, Models, Biological, Molecular Sequence Data, Nuclear Proteins, Proto-Oncogene Proteins, Genes, Tumor Suppressor, Tumor Suppressor Protein p53, Sequence Homology, Amino Acid, Proto-Oncogene Proteins c-mdm2

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