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Enzyme-Responsive DNA Condensates.

Juliette Bucci1,2, Layla Malouf2,3, Diana A Tanase2,3

  • 1Department of Chemical Sciences and Technologies, University of Rome Tor Vergata, Via della Ricerca Scientifica, Rome 00133, Italy.

Journal of the American Chemical Society
|November 6, 2024
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Summary
This summary is machine-generated.

Scientists created DNA-based compartments to control enzyme activity, mimicking natural cell structures. This allows for spatial organization of reactions within synthetic cells, enabling new biomimetic functions.

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Area of Science:

  • Biochemistry
  • Synthetic Biology
  • Biophysics

Background:

  • Membrane-less organelles regulate cellular processes and are key targets for synthetic cell engineering.
  • Replicating the dynamic, spatially distributed functions of natural membrane-less organelles in synthetic systems remains a challenge.

Purpose of the Study:

  • To demonstrate the localization of enzyme activity within DNA-based membrane-less compartments.
  • To engineer spatially organized enzymatic reactions in synthetic cells.

Main Methods:

  • Sequestering DNA or RNA substrates within DNA-based membrane-less compartments to localize enzyme activity.
  • Utilizing reaction-diffusion processes to generate nonequilibrium patterns.
  • Arresting dynamic patterns to create concentric subcompartments for spatial organization.

Main Results:

  • Achieved localized activity of nucleic-acid cleaving enzymes within DNA-based compartments.
  • Observed complex nonequilibrium patterns governed by enzyme concentration and reaction-diffusion.
  • Demonstrated spatial distribution of enzymatic activity by organizing substrates in concentric subcompartments.

Conclusions:

  • Developed a method to engineer advanced biomimetic functions in synthetic membrane-less organelles.
  • Showcased the potential of DNA-based condensates as microbioreactors or platforms for enzyme/nucleic acid detection.