Cited by 110Advanced Proteomics Techniques and ApplicationsMass Spectrometry Techniques and ApplicationsProtein purification and stability

Online Hydrophobic Interaction Chromatography–Mass Spectrometry for Top-Down Proteomics

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Chen, Bifan, Peng, Ying, Valeja, Santosh G., Xiu, Lichen, Alpert, Andrew J., Ge, Ying·2016·Analytical Chemistry

Abstract

Recent progress in top-down proteomics has led to a demand for mass spectrometry (MS)-compatible chromatography techniques to separate intact proteins using volatile mobile phases. Conventional hydrophobic interaction chromatography (HIC) provides high-resolution separation of proteins under nondenaturing conditions but requires high concentrations of nonvolatile salts. Herein, we introduce a series of more-hydrophobic HIC materials that can retain proteins using MS-compatible concentrations of ammonium acetate. The new HIC materials appear to function as a hybrid form of conventional HIC and reverse phase chromatography. The function of the salt seems to be preserving protein structure rather than promoting retention. Online HIC-MS is feasible for both qualitative and quantitative analysis. This is demonstrated with standard proteins and a complex cell lysate. The mass spectra of proteins from the online HIC-MS exhibit low charge-state distributions, consistent with those commonly observed in native MS. Furthermore, HIC-MS can chromatographically separate proteoforms differing by minor modifications. Hence, this new HIC-MS combination is promising for top-down proteomics.

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  1. [3]Chamot-Rooke J Mikaty G Malosse C Soyer M Dumont A Gault J Imhaus AF Martin P Trellet M Clary G Chafey P Camoin L Nilges M Nassif X Dumenil G Science 2011 331 778 782 21311024

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Authors
Chen, B., Peng, Y., Valeja, S. G., Xiu, L., Alpert, A. J., & Ge, Y.
Affiliations
University of Wisconsin–Madison (US)
Corresponding author
  • Alpert, Andrew J.
  • Ge, Ying
Venue
Analytical Chemistry
Published
2016-01-14
Volume
88
Issue
3
Pages
1885-1891
ISSN
  • 0003-2700 (ISSN-L)
  • 1520-6882
OpenAlex
W2229695971
Cited by
110
References
49
Citations by year
2026: 4 · 2025: 9 · 2024: 7 · 2023: 6 · 2022: 14 · 2021: 7 · 2020: 13 · 2019: 13 · 2018: 10 · 2017: 16 · 2016: 9 · 2015: 1
FWCI
7.97
Type
journal article
Language
en
Open access
Locations
  • Analytical Chemistry (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • NIH Office of the Director (S10OD01847)
  • National Heart, Lung, and Blood Institute (R01HL096971, R01HL109810)
  • National Institute of General Medical Sciences (R01GM11705)
Topics
  • Physical Sciences › Chemistry › Spectroscopy › Advanced Proteomics Techniques and Applications
  • Physical Sciences › Chemistry › Spectroscopy › Mass Spectrometry Techniques and Applications
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein purification and stability
Keywords
hydrophobic interaction chromatography, top-down proteomics, protein retention, reverse-phase chromatography, proteoforms, protein modification, native mass spectrometry, protein structure preservation, cell lysate analysis
MeSH terms
Animals, Cattle, Chickens, Chromatography, Chymotrypsinogen, Horses, Aprotinin, Lactoglobulins, Muramidase, Ribonuclease, Pancreatic, Mass Spectrometry, Trypsinogen, Internet, Proteomics, Hydrophobic and Hydrophilic Interactions

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