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Generalist versus Specialist Self-Replicators.

Dávid Komáromy1, Diego M Monzón2, Ivana Marić1

  • 1University of Groningen, Centre for Systems Chemistry, Stratingh Institute, Nijenborgh 4, 9747 AG, Groningen, The Netherlands.

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Summary
This summary is machine-generated.

Synthetic replicators exhibit generalist or specialist behaviors, mirroring Darwinian evolution. Their adaptability to diverse environments depends on supramolecular organization and building block composition.

Keywords:
dynamic combinatorial chemistrygeneralist speciesself-replicationspecialist speciessystems chemistry

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Area of Science:

  • Synthetic biology
  • Chemical evolution
  • Supramolecular chemistry

Background:

  • Darwinian evolution principles are crucial for developing synthetic living systems.
  • Generalist (broad adaptability) and specialist (narrow adaptability) behaviors are key evolutionary traits.
  • Understanding these behaviors in synthetic systems informs the design of self-replicating molecules.

Purpose of the Study:

  • To demonstrate generalist and specialist behaviors in dynamic combinatorial libraries.
  • To investigate the role of building block composition and supramolecular organization in replicator behavior.
  • To link supramolecular assembly modes to the adaptive capabilities of synthetic replicators.

Main Methods:

  • Creation of dynamic combinatorial libraries using peptide-based and oligo(ethylene glycol)-based building blocks.
  • Synthesis of macrocyclic replicators from single building blocks and equimolar mixtures.
  • Analysis of replicator behavior across different 'food niches' to determine generalist/specialist characteristics.

Main Results:

  • Three distinct sets of macrocyclic replicators were identified based on supramolecular organization.
  • Peptide-containing hexamer replicators functioned as generalists, replicating in diverse environments.
  • Octamer peptide-based and hexameric ethyleneoxide-based replicators acted as specialists, requiring specific environments.

Conclusions:

  • Generalist and specialist behaviors were successfully demonstrated in synthetic replicators.
  • Supramolecular organization dictates the adaptive behavior: accommodating diverse building blocks leads to generalism, while restrictive assembly promotes specialism.
  • Sequence specificity was not observed in generalist replicators, suggesting adaptability is linked to structural flexibility rather than precise sequence recognition.