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Updated: Oct 13, 2025
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Yeast As a Chassis for Developing Functional Assays to Study Human P53
Published on: August 4, 2019
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Low-frequency collective motion of DNA-binding domain defines p53 function
Guangxu Zhang1,2,3, Chao Tang1,2,3, Lexin Pan4
1CAS Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, China.
Proteins
|November 18, 2021
Summary
Mutations in the p53 DNA-binding domain (DBD) affect protein function. This study reveals that wild-type and rescued p53 DBD share similar intrinsic mobility patterns, linking protein dynamics to function.
Area of Science:
- Biochemistry
- Structural Biology
- Molecular Dynamics
Background:
- Mutations in the p53 DNA-binding domain (DBD) often alter protein function, impacting DNA interaction.
- The precise mechanisms by which conformational changes from mutations lead to altered molecular recognition remain unclear.
- Protein mobility is an inherent characteristic influenced by primary structure.
Purpose of the Study:
- To investigate if wild-type and mutant p53 core domains exhibit distinct intrinsic mobility patterns.
- To correlate intrinsic protein dynamics with p53 protein function.
Main Methods:
- Normal mode calculations were used to analyze the collective dynamics of p53 DBD in monomeric and tetrameric forms, including mutants.
- Analysis of atomic backbone fluctuations and low-frequency vibration mode statistics.
Main Results:
- Low-frequency collective motions of the p53 DBD showed similar patterns in wild-type and rescued mutants.
- A correlation was observed between the intrinsic collective motion of the DBD and p53 protein function.
- Mutations in the DBD influence the low-frequency vibration of the p53 tetramer by altering inter-monomer collective motions.
Conclusions:
- Intrinsic collective motion of the p53 DBD is linked to its function.
- Understanding these dynamics offers insights into the p53 structure-function relationship.
- This knowledge could aid in developing small molecule drugs targeting protein dynamics for disease therapy.
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