Related Experiment Video

Updated: Jun 13, 2025

Yeast As a Chassis for Developing Functional Assays to Study Human P53
14:57

Yeast As a Chassis for Developing Functional Assays to Study Human P53

Published on: August 4, 2019

9.5K

Deciphering Internal Regulatory Patterns within the p53 Core Tetramer: Insights from Community Network Analysis

Han Zhou1, Shiwei Yan1,2

  • 1School of Physics and Astronomy, Beijing Normal University, Beijing 100875, People's Republic of China.

The Journal of Physical Chemistry Letters
|September 16, 2024
PubMed

Insights

The p53 protein

Area of Science:

  • Molecular Biology
  • Biophysics
  • Computational Biology

Background:

  • The p53 protein, or "guardian of the genome", is crucial for tumor suppression and gene activation.
  • Tetramerization of the p53 core domain is vital for its tumor suppressor functions.
  • Understanding the p53 tetramer's structure and dynamics is key to cancer gene therapy.

Purpose of the Study:

  • To develop a framework for analyzing the p53 tetramer's structure, function, and dynamic connectivity.
  • To investigate the allosteric mechanisms governing p53 tetramer formation and stability.
  • To identify key residues and regulatory pathways within the p53 tetramer.

Main Methods:

  • All-atom molecular dynamics simulations.
  • Community network analysis.
  • Structural and functional analysis of protein dynamics.

Main Results:

  • Identified distinct functional communities within p53 monomers.
  • Revealed a symmetrical network structure in the p53 tetramer.
  • Provided direct evidence for single, double, and multiple pathway regulations within the tetramer, highlighting crucial residue interactions.

Conclusions:

  • The study offers a comprehensive framework for understanding the p53 tetramer's community network.
  • New insights into the stable formation of the p53 core tetramer were gained.
  • This research contributes to the understanding of p53's role in cancer and potential therapeutic strategies.

More Related Videos

High Sensitivity Measurement of Transcription Factor-DNA Binding Affinities by Competitive Titration Using Fluorescence Microscopy06:38

High Sensitivity Measurement of Transcription Factor-DNA Binding Affinities by Competitive Titration Using Fluorescence Microscopy

Published on: February 7, 2019

8.7K
JUMPn: A Streamlined Application for Protein Co-Expression Clustering and Network Analysis in Proteomics07:28

JUMPn: A Streamlined Application for Protein Co-Expression Clustering and Network Analysis in Proteomics

Published on: October 19, 2021

3.1K

Related Concept Videos

Covalently Linked Protein Regulators02:04

Covalently Linked Protein Regulators

Proteins can undergo many types of post-translational modifications, often in response to changes in their environment. These modifications play an important role in the function and stability of these proteins. Covalently linked molecules include functional groups, such as methyl, acetyl, and phosphate groups, and also small proteins, such as ubiquitin. There are around 200 different types of covalent regulators that have been identified.
These groups modify specific amino acids in a protein....
6.8K
Interactions Between Signaling Pathways01:19

Interactions Between Signaling Pathways

Signaling cascades usually lack linearity. Multiple pathways interact and regulate one another, allowing cells to integrate and respond to diverse environmental stimuli.
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
6.2K
Protein Networks02:26

Protein Networks

An organism can have thousands of different proteins, and these proteins must cooperate to ensure the health of an organism. Proteins bind to other proteins and form complexes to carry out their functions. Many proteins interact with multiple other proteins creating a complex network of protein interactions.
These interactions can be represented through maps depicting protein-protein interaction networks, represented as nodes and edges. Nodes are circles that are representative of a protein,...
3.9K
Abnormal Proliferation02:23

Abnormal Proliferation

Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the...
4.5K
Negative Regulator Molecules01:23

Negative Regulator Molecules

Positive regulators allow a cell to advance through cell cycle checkpoints. Negative regulators have an equally important role as they terminate a cell’s progression through the cell cycle—or pause it—until the cell meets specific criteria.
35.2K
Cooperative Binding of Transcription Regulators02:13

Cooperative Binding of Transcription Regulators

Transcriptional regulators bind to specific cis-regulatory sequences in the DNA to regulate gene transcription. These cis-regulatory sequences are very short, usually less than ten nucleotide pairs in length. The short length means that there is a high probability of the exact same sequence randomly occurring throughout the genome.  Since regulators can also bind to groups of similar sequences, this further increases the chances of random binding. Transcriptional regulators form...
6.4K