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Protein Phase Separation during Stress Adaptation and Cellular Memory.

Yasmin Lau1, Henry Patrick Oamen1, Fabrice Caudron1

  • 1School of Biological and Chemical Sciences, Queen Mary University of London, Mile End Road, London E1 4NS, UK.

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Cells use membrane-less organelles, formed by phase separation, for rapid stress adaptation and to encode cellular memory. These dynamic structures are key to cellular organization and survival under challenging conditions.

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cellular memoryphase separationprionsstress

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Area of Science:

  • Cell Biology
  • Biochemistry

Background:

  • Cellular organization relies on spatial and temporal regulation of biochemical processes.
  • Membrane-bound organelles facilitate spatial organization, with controlled content and composition.
  • Membrane-less organelles represent a novel layer of cellular compartmentalization.

Purpose of the Study:

  • To review the principles of phase separation.
  • To explore the function of membrane-less organelles.
  • To highlight their roles in stress response and cellular memory.

Main Methods:

  • Review of scientific literature on phase separation.
  • Analysis of protein properties enabling self-perpetuating assemblies.
  • Examination of dynamic nature of membrane-less organelles.

Main Results:

  • Membrane-less organelles are dynamic, rapidly forming and dissolving structures.
  • These organelles are crucial for emergency cellular adaptation to stress.
  • Proteins forming these structures can create self-perpetuating assemblies for cellular memory.

Conclusions:

  • Phase separation is a fundamental principle driving the formation of membrane-less organelles.
  • Membrane-less organelles are vital for cellular resilience during stress.
  • These structures play a significant role in encoding and maintaining cellular memory.