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  3. Hydrogen-deuterium Back-exchange For High-resolution Mass-spectrometry-based Metabolite Characterization.
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  3. Hydrogen-deuterium Back-exchange For High-resolution Mass-spectrometry-based Metabolite Characterization.

Related Experiment Video

A Hydrogen-Deuterium Exchange Mass Spectrometry (HDX-MS) Platform for Investigating Peptide Biosynthetic Enzymes
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A Hydrogen-Deuterium Exchange Mass Spectrometry (HDX-MS) Platform for Investigating Peptide Biosynthetic Enzymes

Published on: May 4, 2020

Hydrogen-Deuterium Back-Exchange for High-Resolution Mass-Spectrometry-Based Metabolite Characterization.

Michael W Christopher1, Aiden C Ericson1, Yingchan Guo1

  • 1Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States.

Analytical Chemistry
|June 16, 2026

View abstract on PubMed

Summary
This summary is machine-generated.

This study introduces a novel hydrogen-deuterium exchange method using sodium bicarbonate for rapid and robust metabolite characterization. This technique enhances metabolite identification by analyzing deuterium incorporation kinetics, improving upon existing mass spectrometry approaches.

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Time-resolved ElectroSpray Ionization Hydrogen-deuterium Exchange Mass Spectrometry for Studying Protein Structure and Dynamics

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Capillary Electrophoresis-based Hydrogen/Deuterium Exchange for Conformational Characterization of Proteins with Top-down Mass Spectrometry
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Time-resolved ElectroSpray Ionization Hydrogen-deuterium Exchange Mass Spectrometry for Studying Protein Structure and Dynamics
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Time-resolved ElectroSpray Ionization Hydrogen-deuterium Exchange Mass Spectrometry for Studying Protein Structure and Dynamics

Published on: April 17, 2017

Area of Science:

  • Metabolomics
  • Analytical Chemistry
  • Biochemistry

Background:

  • Current metabolite characterization methods like spectroscopy and tandem mass spectrometry (MS/MS) have limitations in throughput, scope, and unambiguous identification.
  • A high-throughput, robust complementary approach to mass spectrometry is needed for metabolite structure elucidation.

Purpose of the Study:

  • To present an optimized hydrogen-deuterium exchange (HDX) method for high-throughput metabolite characterization.
  • To provide a complementary approach to mass spectrometry for identifying unknown metabolites and structural isomers.

Main Methods:

  • Utilized sodium bicarbonate for hydrogen-deuterium exchange (HDX) to label labile and slowly exchanging sites in metabolites.
  • Performed back-exchange to isolate deuterium labeling at slowly exchanging sites for subsequent mass spectrometry (MS) analysis.
  • Employed density functional theory (DFT) calculations to aid in structure elucidation.

    • Main Results:

    • The HDX method provides kinetic resolution of different functional groups and structural isomers, including methyl xanthine, methyl 2-oxovalerate, and hydroxyhippurate isomers.
    • Exchange kinetics and deuterium incorporation levels offer unique, nondiscrete data for metabolite structure determination.
    • The optimized method is high-throughput and robust, complementing existing MS techniques.

    Conclusions:

    • The developed HDX methodology offers a powerful, high-throughput approach for metabolite structure identification and characterization.
    • Kinetic analysis of deuterium incorporation provides valuable insights into metabolite structures and functional groups.
    • This method enhances the capabilities of mass spectrometry in metabolomics research.