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Updated: Feb 18, 2026

Analyzing Large Protein Complexes by Structural Mass Spectrometry
Published on: June 19, 2010
Expanding the structural analysis capabilities on an Orbitrap-based mass spectrometer for large macromolecular
Kyle L Fort1, Michiel van de Waterbeemd, Dmitriy Boll
1Biomolecular Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular Research and Utrecht Institute of Pharmaceutical Sciences, Utrecht University, 3584 Utrecht, The Netherlands. a.j.r.heck@uu.nl.
Native mass spectrometry is crucial for analyzing large biological molecules. This study details modifications to an Orbitrap mass spectrometer to improve its performance for complex analyses.
Area of Science:
- Biophysical Chemistry
- Analytical Chemistry
- Structural Biology
Background:
- Native mass spectrometry (MS) is a powerful technique for characterizing macromolecular biological systems.
- Increasing complexity and size of analytes necessitate advancements in instrument capabilities for accurate structural determination.
Purpose of the Study:
- To describe modifications to an Orbitrap Q Exactive Plus mass spectrometer.
- To enhance instrument performance for analyzing large and complex biomolecules.
Main Methods:
- Detailed description of instrumental modifications to the Orbitrap Q Exactive Plus.
- Implementation of advanced data acquisition and processing techniques.
Main Results:
- Demonstrated increases in signal intensity for large analytes.
- Improved mass resolution enabling finer structural details.
- Expanded maximum m/z (mass-to-charge ratio) range for broader applicability.
Conclusions:
- The described modifications significantly enhance the capabilities of the Orbitrap Q Exactive Plus for native MS.
- These advancements facilitate more comprehensive structural analysis of large and complex biological systems.
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