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Updated: Jun 18, 2026
14:57
Yeast As a Chassis for Developing Functional Assays to Study Human P53
Published on: August 4, 2019
Massively regulated genes: the example of TP53.
Monica Hollstein1, Pierre Hainaut
1LIGHT Laboratories, University of Leeds, Leeds LS2 9JT, UK. m.hollstein@leeds.ac.uk
The Journal of Pathology
|November 18, 2009
Summary
The TP53 gene
Area of Science:
- Molecular Biology
- Genetics
- Cancer Research
Background:
- The TP53 gene encodes the p53 protein, a critical tumor suppressor.
- p53 activity is tightly regulated by a complex network of factors.
- Dysregulation of p53 is implicated in numerous cancers.
Purpose of the Study:
- To provide a comprehensive overview of the regulatory mechanisms governing TP53 gene performance.
- To elucidate the intricate post-translational modifications affecting p53 protein function.
- To highlight the diverse roles of p53 in cellular processes.
Main Methods:
- Literature review and synthesis of existing research on TP53.
- Analysis of gene regulation, alternative splicing, and translation initiation.
- Examination of post-translational modifications and protein-protein interactions.
Main Results:
- TP53 exhibits complex regulation through multiple promoters, alternative splicing, and translation initiation sites.
- Up to 10 p53 isoforms exist, with diverse functions.
- Post-translational modifications (phosphorylation, acetylation, ubiquitination, etc.) critically control p53 stability, localization, and activity.
- Mdm2 is a key negative regulator of p53 abundance and localization.
- Modifications fine-tune p53's DNA binding and interactions with transcription factors.
Conclusions:
- The extensive regulatory network of TP53 allows for a broad spectrum of cellular activities.
- p53's multifaceted regulation is essential given its profound impact on cell fate.
- Understanding TP53 regulation is crucial for developing targeted cancer therapies.
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