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Updated: May 13, 2026
09:17
Structure-Based Simulation and Sampling of Transcription Factor Protein Movements along DNA from Atomic-Scale Stepping to Coarse-Grained Diffusion
Published on: March 1, 2022
Dynamical phase transition of a periodically driven DNA.
Garima Mishra1, Poulomi Sadhukhan, Somendra M Bhattacharjee
1Department of Physics, Banaras Hindu University, Varanasi 221 005, India.
Summary
This study investigates hysteresis in DNA unzipping under periodic forces, revealing a phase diagram for driven DNA. The findings are compared to Ising magnet behavior, offering insights into biological processes.
Area of Science:
- Biophysics
- Molecular Biology
- Statistical Mechanics
Background:
- Biological processes like DNA replication and transcription involve proteins operating far from equilibrium.
- Understanding these dynamic processes requires models that account for non-equilibrium behavior and energy landscapes.
Purpose of the Study:
- To investigate the phenomenon of hysteresis in the context of DNA unzipping driven by periodic forces.
- To propose an experimentally verifiable steady-state phase diagram for driven DNA.
- To compare the behavior of DNA as a two-state system with that of an Ising magnet under asymmetric field variations.
Main Methods:
- Theoretical modeling of DNA unzipping under a periodic external drive.
- Analysis of the system's behavior as a two-state model.
- Comparison with the established framework of an Ising magnet subjected to an asymmetric magnetic field.
Main Results:
- A steady-state phase diagram for driven DNA has been proposed.
- Hysteresis effects during DNA unzipping under periodic driving were characterized.
- The study establishes parallels between driven DNA and an Ising magnet model.
Conclusions:
- The proposed phase diagram provides a framework for understanding driven DNA dynamics.
- The comparison with Ising magnets offers a simplified yet insightful perspective on complex biological machinery.
- This research contributes to the understanding of non-equilibrium processes in molecular biology.
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