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A Prototype for Modular Cell Engineering.

Brandon Wilbanks1, Donovan S Layton1, Sergio Garcia1

  • 1Department of Chemical and Biomolecular Engineering, University of Tennessee , Knoxville, Tennessee 37996, United States.

ACS Synthetic Biology
|October 12, 2017
PubMed
Summary
This summary is machine-generated.

Modular cell (MODCELL) design enables rapid strain development for biochemical production. This approach optimizes growth and product synthesis by coupling modular cells with exchangeable production modules.

Keywords:
MODCELLadaptive laboratory evolutionethanolgrowth couplinggrowth selectionmodular cellproduction modulepyruvate decarboxylase

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Area of Science:

  • Synthetic biology
  • Metabolic engineering
  • Biochemical production

Background:

  • Developing optimal microbial strains for high-yield chemical production is challenging due to extensive screening requirements.
  • Traditional strain engineering is laborious and costly when optimizing for a wide range of biochemicals.

Purpose of the Study:

  • To experimentally validate the modular cell (MODCELL) design principles for rapid strain generation.
  • To demonstrate MODCELL's potential for optimizing biochemical production pathways.

Main Methods:

  • Coupled a modular chassis cell with a heterologous ethanol production module.
  • Modulated the coupling degree between the modular cell and production modules.
  • Utilized the modular cell as a host for selecting optimal enzymes (pyruvate decarboxylase) and employed adaptive laboratory evolution.

Main Results:

  • Demonstrated the necessity of a modular cell for coupling with production modules.
  • Showed that modulating coupling enhances growth and product synthesis.
  • Successfully selected optimal pyruvate decarboxylase variants and identified a hypothetical PDC protein.
  • Adaptive laboratory evolution significantly improved growth and product synthesis rates.

Conclusions:

  • The MODCELL design offers a powerful prototype for modular cell engineering.
  • This approach enables rapid creation of optimal strains for synthesizing diverse biochemicals.
  • MODCELL facilitates efficient optimization of metabolic pathways for industrial applications.