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Updated: Jun 26, 2025
06:26
Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets
Published on: May 15, 2017
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Polymer Collapse & Liquid-Liquid Phase-Separation are Coupled in a Generalized Prewetting Transition
Mason N Rouches1, Benjamin B Machta2
1Department of Molecular Biophysics & Biochemistry, Yale University and Quantitative Biology Institute, Yale University.
Biorxiv : the Preprint Server for Biology
|May 15, 2024
Summary
Chromatin
Area of Science:
- Biophysics
- Molecular Biology
- Genomics
Background:
- Chromatin's 3D organization is crucial for gene expression control.
- Nuclear proteins phase-separate, potentially driving chromosomal organization.
- DNA's interaction with protein phases remains unclear.
Approach:
- Utilized lattice Monte-Carlo simulations and mean-field theory.
- Investigated interactions between long compressible polymers (DNA) and protein mixtures.
- Analyzed generalized prewetting transitions.
Key Points:
- Demonstrated coupled polymer collapse and liquid droplet stabilization.
- Showed stable phases even when components are unstable in isolation.
- Revealed abrupt or continuous transition possibilities.
- Observed 3D polymer structure changes with component concentration.
Conclusions:
- DNA and protein interactions drive novel phase transitions, influencing chromatin organization.
- Chromatin acts as a surface mediating these protein-driven phases.
- This work provides a framework for understanding nuclear organization.
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