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Related Experiment Video

Updated: Jan 20, 2026

Evolutionary History of Life on Earth
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Emulating evolutionary processes to morph aureothin-type modular polyketide synthases and associated oxygenases.

Huiyun Peng1, Keishi Ishida1, Yuki Sugimoto1

  • 1Department of Biomolecular Chemistry, Leibniz Institute for Natural Product Research and Infection Biology (HKI), Beutenbergstrasse 11a, 07745, Jena, Germany.

Nature Communications
|September 4, 2019
PubMed
Summary

This study engineered polyketide synthases (PKSs) by mimicking natural recombination to create new drug analogs. Researchers successfully interconverted assembly lines for aureothin and neoaureothin, offering insights into PKS evolution and engineering.

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Area of Science:

  • Biochemistry
  • Molecular Biology
  • Synthetic Biology

Background:

  • Modular type I polyketide synthases (PKSs) are crucial for producing medicinally important compounds.
  • Genetic engineering of PKSs to create structural analogs remains a significant challenge.

Purpose of the Study:

  • To develop an evolution-guided strategy for morphing modular PKSs.
  • To enable the interconversion of assembly lines for related natural products like aureothin and neoaureothin.

Main Methods:

  • Employing deletion and insertion of PKS modules to alter assembly lines.
  • Utilizing recombination processes inspired by natural evolution.
  • Conducting mutational and functional analyses of PKS tailoring enzymes and phylogenies.

Main Results:

  • Successfully interconverted the biosynthesis pathways of aureothin (aur) and neoaureothin (nor) in both directions.
  • Identified the KS-AT linker as a suitable site for module excision and insertion.
  • Observed contradictory evolutionary clues from enzyme analyses and PKS phylogenies.

Conclusions:

  • Demonstrated a novel approach for engineering PKSs by mimicking evolutionary recombination.
  • Provided insights into the evolutionary history and flexibility of PKS systems.
  • Established a foundation for future engineering strategies to generate diverse polyketide natural products.