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Nucleoside Triphosphates - From Synthesis to Biochemical Characterization
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Nucleoside triphosphates--from synthesis to biochemical characterization.

Marcel Hollenstein1, Christine Catherine Smith2, Michael Räz2

  • 1Department of Chemistry and Biochemistry, University of Bern; marcel.hollenstein@dcb.unibe.ch.

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Summary

This study presents a detailed protocol for synthesizing modified nucleoside triphosphates (dNTPs) using phosphorous(III)-based reagents. These modified dNTPs enable mild functionalization of nucleic acids for diverse chemical biology applications.

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Area of Science:

  • Chemical Biology
  • Nucleic Acid Chemistry
  • Biochemistry

Background:

  • Traditional solid-phase synthesis for modified nucleic acids has limitations in sequence length and reaction conditions.
  • Modified nucleoside triphosphates offer a milder approach for introducing functional groups into nucleic acids.
  • Applications include functional tagging, ribozymes, and DNAzymes, but synthesis and characterization are challenging.

Purpose of the Study:

  • To provide a detailed protocol for synthesizing modified nucleoside analogues using phosphorous(III)-based reagents.
  • To describe the biochemical characterization of these modified analogues.
  • To facilitate the use of modified dNTPs in chemical biology.

Main Methods:

  • Synthesis of modified nucleoside analogues utilizing phosphorous(III)-based reagents.
  • Biochemical characterization including primer extension reactions.
  • Biochemical characterization including terminal deoxynucleotidyl transferase (TdT) tailing polymerization.

Main Results:

  • A comprehensive protocol for the synthesis of modified dNTPs is presented.
  • Methods for biochemical characterization of these analogues are detailed.
  • The protocol addresses challenges in isolating and characterizing nucleoside analogues.

Conclusions:

  • The presented protocol enables the efficient synthesis and characterization of modified dNTPs.
  • This methodology supports the broader application of modified nucleic acids in chemical biology.
  • The detailed procedures are valuable for researchers in the field.