Cited by 175Mass Spectrometry Techniques and ApplicationsAdvanced Proteomics Techniques and ApplicationsMetabolomics and Mass Spectrometry Studies

From Protein Complexes to Subunit Backbone Fragments: A Multi-stage Approach to Native Mass Spectrometry

Belov, Mikhail E., Damoc, Eugen, Denisov, Eduard, Compton, Philip D., Horning, Stevan, Makarov, Alexander A., Kelleher, Neil L.·2013·Analytical Chemistry

Abstract

Native mass spectrometry (MS) is becoming an important integral part of structural proteomics and system biology research. The approach holds great promise for elucidating higher levels of protein structure: from primary to quaternary. This requires the most efficient use of tandem MS, which is the cornerstone of MS-based approaches. In this work, we advance a two-step fragmentation approach, or (pseudo)-MS(3), from native protein complexes to a set of constituent fragment ions. Using an efficient desolvation approach and quadrupole selection in the extended mass-to-charge (m/z) range, we have accomplished sequential dissociation of large protein complexes, such as phosporylase B (194 kDa), pyruvate kinase (232 kDa), and GroEL (801 kDa), to highly charged monomers which were then dissociated to a set of multiply charged fragmentation products. Fragment ion signals were acquired with a high resolution, high mass accuracy Orbitrap instrument that enabled highly confident identifications of the precursor monomer subunits. The developed approach is expected to enable characterization of stoichiometry and composition of endogenous native protein complexes at an unprecedented level of detail.

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Crossref · 10.1021/ac4029328

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Authors
Belov, M. E., Damoc, E., Denisov, E., Compton, P. D., Horning, S., Makarov, A. A., & Kelleher, N. L.
Affiliations
  • Thermo Fisher Scientific (Germany) (DE)
  • Northwestern University (US)
Corresponding author
  • Makarov, Alexander A.
  • Kelleher, Neil L.
Venue
Analytical Chemistry
Published
2013-11-20
Volume
85
Issue
23
Pages
11163-11173
ISSN
  • 0003-2700 (ISSN-L)
  • 1520-6882
OpenAlex
W2027138806
Cited by
175
References
58
Citations by year
2026: 13 · 2025: 5 · 2024: 12 · 2023: 6 · 2022: 10 · 2021: 19 · 2020: 14 · 2019: 20 · 2018: 15 · 2017: 15 · 2016: 16 · 2015: 19 · 2014: 10
FWCI
6.73
Type
journal article
Language
en
Open access
closed
Locations
  • Analytical Chemistry (publishedVersion)
  • PubMed (publishedVersion)
Funders
W.M. Keck Foundation (DT061512)
Topics
  • Physical Sciences › Chemistry › Spectroscopy › Mass Spectrometry Techniques and Applications
  • Physical Sciences › Chemistry › Spectroscopy › Advanced Proteomics Techniques and Applications
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolomics and Mass Spectrometry Studies
Keywords
native mass spectrometry, protein complexes, tandem mass spectrometry, sequential dissociation, desolvation, protein stoichiometry, pyruvate kinase, GroEL, protein complex composition
MeSH terms
Phosphorylase b, Mass Spectrometry, Protein Subunits, Spectrometry, Mass, Electrospray Ionization, Proteomics, Tandem Mass Spectrometry

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