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Two-step pathway for isoprenoid synthesis.

Alkiviadis Orfefs Chatzivasileiou1, Valerie Ward1,2, Steven McBride Edgar1

  • 1Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139.

Proceedings of the National Academy of Sciences of the United States of America
|December 26, 2018
PubMed
Summary
This summary is machine-generated.

We developed a synthetic pathway for producing isoprenoid precursors, overcoming limitations of glucose-dependent biological methods. This novel isopentenol utilization pathway (IUP) offers efficient production of key isoprenoid building blocks.

Keywords:
biosynthesisisopentenolisoprenoidspathwayutilization

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Area of Science:

  • Biotechnology
  • Synthetic Biology
  • Metabolic Engineering

Background:

  • Isoprenoids are vital chemicals with diverse applications.
  • Current biological production relies on glucose metabolism, facing limitations like pathway complexity and cofactor demands.

Purpose of the Study:

  • To engineer a novel synthetic pathway for isoprenoid precursor production.
  • To overcome the inherent limitations of existing glucose-dependent isoprenoid biosynthesis routes.

Main Methods:

  • Developed the isopentenol utilization pathway (IUP) using sequential phosphorylation of isopentenol isomers.
  • Identified and assembled suitable enzymes for the synthetic pathway.
  • Probed the flux capacity of the IUP for downstream isoprenoid production.

Main Results:

  • The IUP efficiently produces isopentenyl diphosphate and dimethylallyl diphosphate.
  • Pathway flux exceeded the capacity of most tested downstream pathways.
  • Achieved competitive isoprenoid production fluxes compared to literature.

Conclusions:

  • The IUP represents a significant advancement in synthetic isoprenoid production.
  • This pathway offers a more efficient and potentially scalable alternative to traditional methods.
  • The high flux capacity suggests broad applicability for various isoprenoid products.