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Although gaseous molecules travel at tremendous speeds (hundreds of meters per second), they collide with other gaseous molecules and travel in many different directions before reaching the desired target. At room temperature, a gaseous molecule will experience billions of collisions per second. The mean free path is the average distance a molecule travels between collisions. The mean free path increases with decreasing pressure; in general, the mean free path for a gaseous molecule will be...
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Ballistic diffusion fronts in biomolecular condensates.

Weixiang Chen1, Brigitta Dúzs1, Pablo G Argudo2,3

  • 1Life-Like Materials and Systems, Department of Chemistry, University of Mainz, Mainz, Germany.

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Summary
This summary is machine-generated.

Molecular transport in biomolecular condensates defies classical diffusion. A novel, ultrasharp ballistic diffusion front, driven by molecular recognition and dynamic transitions, was discovered, impacting cellular processes.

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Area of Science:

  • Biophysics
  • Cell Biology
  • Chemical Physics

Background:

  • Biomolecular condensates compartmentalize cellular processes via molecular recognition.
  • The transport mechanisms within these condensates and their relation to dynamics remain unclear.

Purpose of the Study:

  • To investigate molecular transport dynamics in DNA model condensates.
  • To elucidate the relationship between transport, molecular recognition, and condensate properties.

Main Methods:

  • Studied molecular transport in DNA model condensates.
  • Analyzed transport fronts and their time dependence.
  • Investigated the role of molecular recognition and condensate transitions.

Main Results:

  • Molecular transport in DNA condensates deviates from classical Fickian diffusion.
  • A novel ultrasharp ballistic diffusion front propagating linearly with time was identified.
  • This transport is linked to molecular recognition and an arrested-to-dynamic transition in condensate properties.

Conclusions:

  • Transport in biomolecular condensates is governed by a mechanism intertwining chemical kinetics and condensate dynamics.
  • This finding offers insights into regulating synthetic condensate systems and biological functions.