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Yeast As a Chassis for Developing Functional Assays to Study Human P53
Published on: August 4, 2019
Structural biology of the tumor suppressor p53
Andreas C Joerger1, Alan R Fersht
1Medical Research Council Centre for Protein Engineering, Cambridge, United Kingdom. acj2@mrc-lmb.cam.ac.uk
Abstract:
The tumor suppressor protein p53 induces or represses the expression of a variety of target genes involved in cell cycle control, senescence, and apoptosis in response to oncogenic or other cellular stress signals. It exerts its function as guardian of the genome through an intricate interplay of independently folded and intrinsically disordered functional domains. In this review, we provide insights into the structural complexity of p53, the molecular mechanisms of its inactivation in cancer, and therapeutic strategies for the pharmacological rescue of p53 function in tumors. p53 emerges as a paradigm for a more general understanding of the structural organization of modular proteins and the effects of disease-causing mutations.
Insights
The tumor suppressor protein p53, a guardian of the genome, regulates genes for cell cycle control, senescence, and apoptosis. This review explores p53
Area of Science:
- Molecular Biology
- Cancer Research
- Structural Biology
Background:
- The tumor suppressor protein p53 is crucial for cellular stress response.
- p53 controls genes involved in cell cycle arrest, senescence, and apoptosis.
- Its function is mediated by a combination of structured and disordered domains.
Purpose of the Study:
- To review the structural complexity of p53.
- To elucidate mechanisms of p53 inactivation in cancer.
- To discuss therapeutic strategies for restoring p53 function.
Main Methods:
- Literature review of structural and functional studies on p53.
- Analysis of cancer-associated mutations affecting p53.
- Overview of emerging pharmacological approaches targeting p53.
Main Results:
- p53's modular structure, including intrinsically disordered regions, is key to its function.
- Cancer-related mutations often compromise p53's structural integrity and activity.
- Pharmacological strategies aim to reactivate mutant or stabilize wild-type p53.
Conclusions:
- p53's intricate structure underlies its role as a master regulator.
- Understanding p53 inactivation is vital for developing effective cancer therapies.
- p53 serves as a model for studying modular proteins and mutation effects.
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