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Chemical Gardens as Flow-through Reactors Simulating Natural Hydrothermal Systems
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Native Chemical Ligation-Photodesulfurization in Flow.

Timothy S Chisholm1, Daniel Clayton1, Luke J Dowman1

  • 1School of Chemistry , The University of Sydney , Sydney , NSW 2006 , Australia.

Journal of the American Chemical Society
|May 25, 2018
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Summary

This study introduces a new flow chemistry method combining native chemical ligation (NCL) and photodesulfurization for faster protein synthesis. This technique significantly accelerates the creation of complex peptides and proteins for therapeutic and diagnostic applications.

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Area of Science:

  • Chemical Synthesis
  • Biochemistry
  • Flow Chemistry

Background:

  • Native chemical ligation (NCL) and desulfurization are key for synthesizing large polypeptides.
  • Current batch methods for NCL-desulfurization are time-consuming.

Purpose of the Study:

  • To develop a novel photodesulfurization transformation.
  • To integrate this with flow NCL for efficient polypeptide assembly.
  • To significantly reduce synthesis time compared to batch methods.

Main Methods:

  • Utilized flow chemistry for ligation-based polypeptide assembly.
  • Developed a novel photodesulfurization reaction.
  • Coupled flow NCL with the new photodesulfurization method.

Main Results:

  • Achieved polypeptide synthesis up to 2 orders of magnitude faster than batch methods.
  • Demonstrated rapid synthesis of enfuvirtide (HIV entry inhibitor).
  • Showcased rapid synthesis of somatorelin (peptide diagnostic agent).

Conclusions:

  • The new ligation-photodesulfurization flow platform enables rapid access to native polypeptides.
  • This method offers a significant advancement in chemical protein synthesis.
  • Successfully synthesized clinically relevant peptides, highlighting the platform's potential.