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Related Experiment Video

Updated: Jun 13, 2026

A Hydrogen-Deuterium Exchange Mass Spectrometry (HDX-MS) Platform for Investigating Peptide Biosynthetic Enzymes
11:32

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

Published on: May 4, 2020

Deuteration distribution estimation with improved sequence coverage for HX/MS experiments.

Xinghua Lou1, Marc Kirchner, Bernhard Y Renard

  • 1Interdisciplinary Center for Scientific Computing, University of Heidelberg, Heidelberg, Germany.

Bioinformatics (Oxford, England)
|May 5, 2010
PubMed
Summary
This summary is machine-generated.

HeXicon is a new workflow that automatically estimates protein deuteration distributions from hydrogen exchange mass spectrometry (HX-MS) data, improving accuracy and sequence coverage for protein dynamics studies.

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Capillary Electrophoresis-based Hydrogen/Deuterium Exchange for Conformational Characterization of Proteins with Top-down Mass Spectrometry
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Capillary Electrophoresis-based Hydrogen/Deuterium Exchange for Conformational Characterization of Proteins with Top-down Mass Spectrometry

Published on: June 8, 2021

Analyzing Protein Dynamics Using Hydrogen Exchange Mass Spectrometry
11:37

Analyzing Protein Dynamics Using Hydrogen Exchange Mass Spectrometry

Published on: November 29, 2013

Related Experiment Videos

Last Updated: Jun 13, 2026

A Hydrogen-Deuterium Exchange Mass Spectrometry (HDX-MS) Platform for Investigating Peptide Biosynthetic Enzymes
11:32

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

Published on: May 4, 2020

Capillary Electrophoresis-based Hydrogen/Deuterium Exchange for Conformational Characterization of Proteins with Top-down Mass Spectrometry
05:45

Capillary Electrophoresis-based Hydrogen/Deuterium Exchange for Conformational Characterization of Proteins with Top-down Mass Spectrometry

Published on: June 8, 2021

Analyzing Protein Dynamics Using Hydrogen Exchange Mass Spectrometry
11:37

Analyzing Protein Dynamics Using Hydrogen Exchange Mass Spectrometry

Published on: November 29, 2013

Area of Science:

  • Biochemistry
  • Structural Biology
  • Computational Biology

Background:

  • Time-resolved hydrogen exchange (HX) coupled with mass spectrometry (MS) is crucial for analyzing protein structure, dynamics, and interactions.
  • HX experiments yield time-dependent deuteration levels for protein peptide sequences, essential for understanding protein dynamics.
  • Interpreting this complex data remains a significant bottleneck in the HX-MS workflow.

Purpose of the Study:

  • To develop a novel algorithmic workflow, HeXicon, for automated estimation of deuteration distributions in HX-MS data.
  • To enhance sequence coverage and provide deeper insights into protein dynamics, including bimodal exchange behavior.
  • To address challenges in data interpretation and improve the overall efficiency of the HX-MS workflow.

Main Methods:

  • Implementation of an L(1)-regularized feature extraction routine for comprehensive deuteration distribution estimation.
  • Augmentation of existing peptide sequence information with inferred peptide candidates from known protein sequences.
  • Utilization of a supervised classification procedure to balance sensitivity and specificity for improved results.

Main Results:

  • HeXicon successfully extracts the full deuteration distribution, enabling the detection of bimodal exchange patterns.
  • The workflow effectively handles ill-posed estimation problems, producing sparse and physically meaningful results.
  • HeXicon achieves increased sequence coverage in HX-MS data analysis.

Conclusions:

  • HeXicon offers a robust and automated solution for interpreting HX-MS data, overcoming current workflow limitations.
  • The developed workflow provides more detailed insights into protein dynamics and structural behavior.
  • HeXicon is implemented in C++ with a graphical user interface and is publicly available.