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Updated: Apr 17, 2026
21:08
Engineering Cell-permeable Protein
Published on: December 28, 2009
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Active transport enables protein condensation in cells
Gaurav Chauhan1, Edward G Wilkinson2, Yaning Yuan2
1Department of Biomedical Engineering and Center for Biomolecular Condensates, James McKelvey School of Engineering, Washington University in St. Louis, St. Louis, MO 63130, USA.
Science Advances
|May 23, 2025
Summary
Actin-mediated movement of cytoplasmic ARF7 and ARF19 condensates enhances their formation in plants. Molecular simulations show that forces drive macromolecule association, promoting phase separation and condensate dynamics.
Area of Science:
- Plant molecular biology
- Cellular biophysics
- Biomolecular condensates
Background:
- Biomolecular condensates form through various mechanisms.
- In plants, ARF7 and ARF19 transcription factor condensation regulates auxin response.
- Understanding condensate dynamics is crucial for cellular regulation.
Purpose of the Study:
- To investigate the role of actin-mediated movement in ARF condensate formation.
- To explore how molecular motility influences phase separation.
- To provide insights into the regulation of cellular condensate dynamics.
Main Methods:
- Observation of actin-mediated movement of cytoplasmic ARF condensates.
- Coarse-grained molecular simulations of active polymers.
- Analysis of force-driven macromolecule associations and phase separation.
Main Results:
- Actin-mediated movement enhances the condensation of ARF7 and ARF19.
- Applied forces promote macromolecule association and enhance phase separation.
- Dense phases preferentially accumulate motile molecules.
Conclusions:
- Molecular motility can drive biomolecular condensate phase separation.
- Cellular mechanisms involving molecular movement regulate condensate dynamics.
- Findings offer insights into plant hormone response and condensate behavior.
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