Protein Phase Separation during Stress Adaptation and Cellular Memory

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.