Related Experiment Video

Updated: Aug 14, 2026

Chemical Dimerization-Induced Protein Condensates on Telomeres
08:52

Chemical Dimerization-Induced Protein Condensates on Telomeres

Published on: April 12, 2021

Dimerization of the p53 oligomerization domain: identification of a folding nucleus by molecular dynamics simulations

Lillian T Chong1, Christopher D Snow, Young Min Rhee

  • 1Department of Chemistry, Stanford University, Stanford, CA 94305-5080, USA.

Journal of Molecular Biology
|December 14, 2004
PubMed

Insights

Researchers simulated protein dimer folding using molecular dynamics. They identified a specific folding nucleus essential for p53 oligomerization domain dimerization, offering new insights into protein folding mechanisms.

Area of Science:

  • Biochemistry
  • Structural Biology
  • Computational Biology

Background:

  • Protein dimerization is crucial for biological function.
  • The p53 oligomerization domain (p53 OD) is vital for tumor suppression.
  • Understanding p53 OD dimerization mechanisms is key to cancer research.

Purpose of the Study:

  • To investigate the folding and dimerization process of the p53 oligomerization domain.
  • To identify the folding nucleus governing p53 dimer formation.
  • To provide atomistic insights into protein dimer refolding.

Main Methods:

  • Utilized molecular dynamics (MD) simulations in explicit water.
  • Analyzed high-temperature unfolding trajectories to identify transition state ensemble (TSE) structures.
  • Selected 129 TSE structures based on a 50% transmission coefficient from room-temperature simulations.

Main Results:

  • Successfully simulated the refolding of a protein dimer from the TSE.
  • Identified a specific folding nucleus responsible for p53 OD dimerization.
  • Provided unprecedented atomistic detail of the coupled folding and binding process.

Conclusions:

  • The study offers the first atomistic view of protein dimer refolding using MD simulations.
  • The identified folding nucleus is critical for p53 oligomerization.
  • These findings align with experimental data and advance our understanding of protein folding dynamics.

More Related Videos

Detection of Aggregation-Prone Behavior in Mutant P53 V157F Breast Cancer Cells Using Multipoint Thioflavin T Fluorescence04:56

Detection of Aggregation-Prone Behavior in Mutant P53 V157F Breast Cancer Cells Using Multipoint Thioflavin T Fluorescence

Published on: December 30, 2025

Visualization and Quantification of Intermolecular RNA Base Pairing in in vitro RNA Clusters Using Split Broccoli RNA Reporters10:52

Visualization and Quantification of Intermolecular RNA Base Pairing in in vitro RNA Clusters Using Split Broccoli RNA Reporters

Published on: May 29, 2026

Related Concept Videos

Protein Folding01:22

Protein Folding

Overview
Molecular Chaperones and Protein Folding03:00

Molecular Chaperones and Protein Folding

The native conformation of a protein is formed by interactions between the side chains of its constituent amino acids. When the amino acids cannot form these interactions, the protein cannot fold by itself and needs chaperones. Notably, chaperones do not relay any additional information required for the folding of polypeptides; the native conformation of a protein is determined solely by its amino acid sequence. Chaperones catalyze protein folding without being a part of the folded protein.
The...
Nuclear Protein Sorting01:34

Nuclear Protein Sorting

Nuclear protein sorting is the selective trafficking of histones, polymerases, gene regulatory proteins into the nucleus and exporting RNAs and ribosomes to the cytosol. It is a tightly controlled process that regulates gene expression within a cell.
Proteins targeted to the nucleus carry nuclear localization signals or NLS recognized by import receptors in the cytosol. Similarly, proteins with nuclear export signals are recognized by export receptors. Import and export receptors are...
Protein Folding01:25

Protein Folding

Proteins are chains of amino acids linked together by peptide bonds. Upon synthesis, a protein folds into a three-dimensional conformation, critical to its biological function. Interactions between its constituent amino acids guide protein folding, and hence the protein structure is primarily dependent on its amino acid sequence.
Protein Structure Is Critical to Its Biological Function
Proteins perform a wide range of biological functions such as catalyzing chemical reactions, providing...