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¹H NMR of Labile Protons: Deuterium (²H) Substitution00:48

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This lesson illustrates the role of deuterium substitution in simplifying the NMR spectrum of compounds comprising labile protons. One method employed is the use of deuterium. Amongst the three isotopes of hydrogen, deuterium (2H) has a nucleus composed of one proton and one neutron. When the D2O solvent is added to a pure dry ethanol solution, its labile proton is substituted with deuterium.
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Related Experiment Video

Updated: Mar 9, 2026

Time-resolved ElectroSpray Ionization Hydrogen-deuterium Exchange Mass Spectrometry for Studying Protein Structure and Dynamics
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Using Hydrogen-Deuterium Exchange Mass Spectrometry to Examine Protein-Membrane Interactions.

O Vadas1, M L Jenkins2, G L Dornan2

  • 1Pharmaceutical Sciences Section, University of Geneva, Geneva, Switzerland.

Methods in Enzymology
|January 9, 2017
PubMed
Summary

Hydrogen-deuterium exchange mass spectrometry (HDX-MS) analyzes protein dynamics at membranes. This technique identifies protein-membrane interfaces and conformational changes, aiding research into cellular processes and disease mechanisms.

Keywords:
Allosteric modificationsBiophysicsConformational changesFluorescence-resonance energy transferGPCRHydrogen–deuterium exchange mass spectrometryLipid signalingMembrane proteinsPI3KPhosphoinositidesPhospholipidsProtein dynamicsProtein–membrane interactions

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Area of Science:

  • Biochemistry
  • Cell Biology
  • Analytical Chemistry

Background:

  • Cellular processes rely on protein networks assembled at membrane surfaces.
  • Protein recruitment to membranes involves lipidation, protein interactions, and lipid binding.
  • Limited analytical techniques exist for studying protein-membrane complexes at the molecular level.

Purpose of the Study:

  • To review the application of hydrogen-deuterium exchange mass spectrometry (HDX-MS) in studying protein-membrane interactions.
  • To highlight HDX-MS's capability in identifying protein-membrane interfaces and conformational dynamics.
  • To showcase HDX-MS's utility in examining macromolecular complex recruitment, activation, and the impact of modifications and mutations.

Main Methods:

  • Hydrogen-deuterium exchange mass spectrometry (HDX-MS) measures protein conformational dynamics.
  • HDX-MS analyzes the rate of amide hydrogen exchange with the solvent.
  • This method probes protein behavior in native states.

Main Results:

  • HDX-MS can identify protein-membrane interaction interfaces.
  • Conformational changes upon membrane recruitment are defined by HDX-MS.
  • The technique elucidates how large complexes are recruited and activated on membranes.

Conclusions:

  • HDX-MS is a powerful tool for studying protein-membrane systems.
  • It provides insights into the molecular mechanisms of membrane-associated protein assembly and function.
  • HDX-MS aids in understanding the role of posttranslational modifications and mutations in these processes.