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Compartmentalization - A Prerequisite for Maintaining and Changing an Identity.

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Directed evolution relies on linking genotype to phenotype using compartments. Novel microcompartments enable in vitro protein translation for demanding enzyme engineering projects beyond cellular limits.

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Area of Science:

  • Biotechnology
  • Molecular Biology
  • Biochemistry

Background:

  • Chemical manipulation of DNA is more efficient than manipulating encoded bioproducts like enzymes.
  • Directed evolution requires maintaining the genotype-phenotype link via compartmentalization for bioproduct optimization.
  • Cellular compartments are ideal but limit radical bioproduct modifications, necessitating in vitro methods.

Purpose of the Study:

  • To explore demanding enzyme engineering projects requiring evaluation of numerous enzyme variants.
  • To enable radical bioproduct modifications, such as introducing novel cofactors, through advanced compartmentalization.
  • To overcome limitations of in-cell expression for complex protein engineering.

Main Methods:

  • Development of high-rate production of simple and advanced microcompartments.
  • Integration of microcompartment technology with in vitro protein translation systems.
  • Application of these systems for directed evolution of enzymes.

Main Results:

  • Successful creation of microcompartments suitable for in vitro applications.
  • Demonstration of combining microcompartments with protein translation for enzyme variant evaluation.
  • Facilitation of evaluating hundreds of thousands of enzyme variants over multiple generations.

Conclusions:

  • Advanced microcompartments coupled with in vitro translation offer a powerful platform for enzyme engineering.
  • This approach expands the scope of directed evolution to projects not feasible in biological cells.
  • It provides a unique opportunity to explore complex enzyme modifications and optimize bioproducts with novel functionalities.