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Related Concept Videos

Atomic Nuclei: Types of Nuclear Relaxation01:28

Atomic Nuclei: Types of Nuclear Relaxation

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Updated: Jul 12, 2026

Single-Molecule Measurement of Protein Interaction Dynamics Within Biomolecular Condensates
06:48

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Published on: January 5, 2024

Single-Molecule Dwell Times in Biomolecular Condensates.

Fengshuo Yang, Roumita Moulick, Cailing Wang

    Biorxiv : the Preprint Server for Biology
    |July 10, 2026
    PubMed
    Summary

    Biomolecular condensates are dynamic compartments. Our theory reveals how molecule dwell times reveal escape mechanisms, distinguishing diffusion from barrier-limited transport for natural and synthetic systems.

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    Area of Science:

    • Biophysics
    • Cell Biology
    • Biochemistry

    Background:

    • Biomolecular condensates are essential membrane-free organelles.
    • Molecule dwell time within condensates dictates their function.
    • Understanding molecular dynamics is key to condensate biology.

    Purpose of the Study:

    • To develop a theoretical framework for biomolecular condensate dwell-time distributions.
    • To link dwell-time signatures to underlying molecular escape mechanisms.
    • To provide insights into the physical principles governing condensate function.

    Main Methods:

    • Analytical theory development based on single-molecule measurements.
    • Modeling of molecular transport within dense phases.
    • Analysis of dwell-time distributions to identify escape kinetics.

    Main Results:

    • Predicted dwell-time distributions show power-law followed by exponential decay.
    • A -1.5 power law indicates diffusion-limited escape.
    • A -0.5 power law signifies interfacial barrier-crossing-limited escape.

    Conclusions:

    • Dwell-time distribution shapes directly report on molecular retention mechanisms.
    • The theory distinguishes between diffusion and barrier-limited escape pathways.
    • Findings have broad implications for understanding and engineering biomolecular condensates.