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Assessing and harnessing updated polyketide synthase modules through combinatorial engineering.

Katherine A Ray1, Joshua D Lutgens1, Ramesh Bista1

  • 1Department of Molecular Biosciences, The University of Texas at Austin, Austin, TX.

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Combinatorial engineering of polyketide synthases using an updated module boundary shows promise. A new platform efficiently built large synthases, revealing challenges and enabling hybrid designs for novel compounds.

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Area of Science:

  • Synthetic biology
  • Biochemistry
  • Metabolic engineering

Background:

  • Polyketide assembly lines are modular and crucial for producing valuable compounds.
  • Combinatorial engineering offers a route to novel polyketides.
  • Previous studies focused on short synthases; larger ones using updated module boundaries were unexplored.

Conclusions:

  • The developed platform enables efficient construction and testing of large, combinatorially engineered polyketide synthases.
  • Understanding limitations like ketosynthase gatekeeping is key to improving functional yields.
  • Hybrid synthases, particularly those leveraging relaxed gatekeeping, offer exciting possibilities for producing designer polyketides.