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Yeast As a Chassis for Developing Functional Assays to Study Human P53
Published on: August 4, 2019
Peptide and protein chemistry approaches to study the tumor suppressor protein p53
Champak Chatterjee1, Sumeet K Singh1
1Department of Chemistry, University of Washington, Seattle, WA 98195, USA. sumeet19@uw.edu.
Abstract:
The tumor suppressor and master gene regulator protein p53 has been the subject of intense investigation for several decades due to its mutation in about half of all human cancers. However, mechanistic studies of p53 in cells are complicated by its many dynamic binding partners and heterogeneous post-translational modifications. The design of therapeutics that rescue p53 functions in cells requires a mechanistic understanding of its protein-protein interactions in specific protein complexes and identifying changes in p53 activity by diverse post-translational modifications. This review highlights the important roles that peptide and protein chemistry have played in biophysical and biochemical studies aimed at elucidating p53 regulation by several key binding partners. The design of various peptide inhibitors that rescue p53 function in cells and new opportunities in targeting p53-protein interactions are discussed. In addition, the review highlights the importance of a protein semisynthesis approach to comprehend the role of site-specific PTMs in p53 regulation.
Insights
The tumor suppressor protein p53 is crucial in cancer, but its complex interactions and modifications hinder therapeutic development. Peptide and protein chemistry offer insights into p53 regulation and potential drug targets.
Area of Science:
- Biochemistry
- Molecular Biology
- Chemical Biology
Background:
- The tumor suppressor protein p53 is frequently mutated in human cancers.
- Studying p53 function is challenging due to its numerous binding partners and post-translational modifications (PTMs).
Purpose of the Study:
- To review the role of peptide and protein chemistry in understanding p53 regulation.
- To discuss therapeutic strategies targeting p53-protein interactions and the impact of PTMs.
Main Methods:
- Biophysical and biochemical studies utilizing peptide and protein chemistry.
- Analysis of p53 regulation by key binding partners.
- Exploration of protein semisynthesis for PTM analysis.
Main Results:
- Peptide chemistry has been vital in elucidating p53 regulation by binding partners.
- Peptide inhibitors designed to rescue p53 function show therapeutic potential.
- Protein semisynthesis aids in understanding site-specific PTMs in p53 regulation.
Conclusions:
- Understanding p53 protein-protein interactions and PTMs is essential for developing p53-based cancer therapies.
- Peptide and protein chemistry are powerful tools for dissecting p53 biology.
- Targeting p53 interactions and PTMs offers promising avenues for cancer treatment.
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