Computational and Structural Biotechnology Journal (Jan 2021)

Physics of compartmentalization: How phase separation and signaling shape membrane and organelle identity

  • Elisa Floris,
  • Andrea Piras,
  • Luca Dall’Asta,
  • Andrea Gamba,
  • Emilio Hirsch,
  • Carlo C. Campa

Journal volume & issue
Vol. 19
pp. 3225 – 3233

Abstract

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Compartmentalization of cellular functions is at the core of the physiology of eukaryotic cells. Recent evidences indicate that a universal organizing process – phase separation – supports the partitioning of biomolecules in distinct phases from a single homogeneous mixture, a landmark event in both the biogenesis and the maintenance of membrane and non-membrane-bound organelles. In the cell, ‘passive’ (non energy-consuming) mechanisms are flanked by ‘active’ mechanisms of separation into phases of distinct density and stoichiometry, that allow for increased partitioning flexibility and programmability. A convergence of physical and biological approaches is leading to new insights into the inner functioning of this driver of intracellular order, holding promises for future advances in both biological research and biotechnological applications.