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Protein-Based Patterning to Spatially Functionalize Biomimetic Membranes.

María Reverte-López1, Svetozar Gavrilovic1, Adrián Merino-Salomón1

  • 1Department of Cellular and Molecular Biophysics, Max Planck Institute of Biochemistry, 82152, Martinsried, Germany.

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|June 23, 2023
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Summary

Bacterial Min proteins can be engineered for synthetic biology, acting as a versatile tool for surface patterning and creating functional 3D systems. This research highlights their potential in bioengineering artificial cell mimics and microcarriers.

Keywords:
3D-printinglipid vesiclesmicroswimmerspatterningreaction-diffusion systemssurface functionalizationsynthetic biology

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Area of Science:

  • Synthetic Biology
  • Biophysics
  • Materials Science

Background:

  • The bottom-up reconstitution of proteins enables modular engineering of synthetic cellular systems.
  • Bacterial Min proteins are known for self-organizing reaction-diffusion systems.
  • Min proteins exhibit unexpected functionality in directional active transport of cargo molecules on membranes.

Purpose of the Study:

  • To explore the MinDE protein system as a surface patterning tool for synthetic 3D systems.
  • To demonstrate the utility of Min proteins in fabricating microswimmer-like structures.
  • To investigate the MinDE system's capability for patterning and clustering protein structures within lipid vesicles.

Main Methods:

  • Utilizing two-photon lithography to fabricate microswimmer-like structures with tailored lipid bilayers.
  • Reconstituting and applying the MinDE protein system for surface functionalization.
  • Observing pattern formation and cargo transport within lipid vesicles.

Main Results:

  • Min proteins uniformly pattern bioactive molecules on fabricated microswimmer surfaces.
  • The MinDE system forms stationary patterns inside lipid vesicles.
  • Targeting and clustering of higher-order protein structures on the inner leaflet of lipid vesicles is achieved.

Conclusions:

  • The MinDE protein system serves as a versatile tool for surface patterning in synthetic biology.
  • Min proteins facilitate the rational design of spatially patterned artificial biosystems.
  • Min proteins offer a robust molecular toolkit for functionalizing cell mimics and microcarriers.