Cited by 53Advanced Proteomics Techniques and ApplicationsMass Spectrometry Techniques and ApplicationsAnalytical Chemistry and Chromatography

Increasing the Separation Capacity of Intact Histone Proteoforms Chromatography Coupling Online Weak Cation Exchange-HILIC to Reversed Phase LC UVPD-HRMS

Open access
Gargano, Andrea F. G., Shaw, Jared B., Zhou, Mowei, Wilkins, Christopher S., Fillmore, Thomas L., Moore, Ronald J., Somsen, Govert W., Paša-Tolić, Ljiljana·2018·Journal of Proteome Research

Abstract

Top-down proteomics is an emerging analytical strategy to characterize combinatorial protein post-translational modifications (PTMs). However, sample complexity and small mass differences between chemically closely related proteoforms often limit the resolution attainable by separations employing a single liquid chromatographic (LC) principle. In particular, for ultramodified proteins like histones, extensive and time-consuming fractionation is needed to achieve deep proteoform coverage. Herein, we present the first online nanoflow comprehensive two-dimensional liquid chromatography (nLC×LC) platform top-down mass spectrometry analysis of histone proteoforms. The described two-dimensional LC system combines weak cation exchange chromatography under hydrophilic interaction LC conditions (i.e., charge- and hydrophilicity-based separation) with reversed phase liquid chromatography (i.e., hydrophobicity-based separation). The two independent chemical selectivities were run at nanoflows (300 nL/min) and coupled online with high-resolution mass spectrometry employing ultraviolet photodissociation (UVPD-HRMS). The nLC×LC workflow increased the number of intact protein masses observable relative to one-dimensional approaches and allowed characterization of hundreds of proteoforms starting from limited sample quantities (∼1.5 μg).

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1021/acs.jproteome.8b00458

Cites

49 of 49 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Weak-cationic exchange HILIC and RPLC enabled characterization of hundreds of histone proteoforms from ~1.5 μg of protein.

    “However, some recent online approaches have been developed which include using weak-cationic exchange HILIC and RPLC to enable the characterization of hundreds of histone proteoforms from ~1.5 μg of protein [90].”

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Gargano, A. F. G., Shaw, J. B., Zhou, M., Wilkins, C. S., Fillmore, T. L., Moore, R. J., Somsen, G. W., & Paša-Tolić, L.
Affiliations
  • Vrije Universiteit Amsterdam (NL)
  • Pacific Northwest National Laboratory (US)
  • Pacific Northwest National Laboratory , , P.O. Box 999, , ,
Corresponding author
Gargano, Andrea F. G.
Venue
Journal of Proteome Research
Published
2018-09-18
Volume
17
Issue
11
Pages
3791-3800
ISSN
  • 1535-3893 (ISSN-L)
  • 1535-3907
OpenAlex
W2890998722
Cited by
53
References
49
Citations by year
2026: 3 · 2025: 3 · 2024: 4 · 2023: 5 · 2022: 5 · 2021: 13 · 2020: 11 · 2019: 7 · 2018: 2
FWCI
3.56
Type
journal article
Language
en
Open access
Locations
  • Journal of Proteome Research (publishedVersion, cc-by-nc-nd)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • UvA-DARE (University of Amsterdam) (publishedVersion)
  • VU Research Portal (publishedVersion, other-oa)
  • OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (submittedVersion)
  • Data Archiving and Networked Services (DANS) (submittedVersion, other-oa)
Funders
  • Universiteit van Amsterdam
  • Nederlandse Organisatie voor Wetenschappelijk Onderzoek (722.015.009)
Topics
  • Physical Sciences › Chemistry › Spectroscopy › Advanced Proteomics Techniques and Applications
  • Physical Sciences › Chemistry › Spectroscopy › Mass Spectrometry Techniques and Applications
  • Physical Sciences › Chemistry › Spectroscopy › Analytical Chemistry and Chromatography
Keywords
top-down proteomics, weak cation exchange chromatography, hydrophilic interaction liquid chromatography, reversed-phase liquid chromatography, two-dimensional liquid chromatography, ultraviolet photodissociation, high-resolution mass spectrometry, post-translational modification
MeSH terms
Chromatography, Ion Exchange, HeLa Cells, Histones, Humans, Protein Processing, Post-Translational, Spectrophotometry, Ultraviolet, Proteomics, Complex Mixtures, Tandem Mass Spectrometry, Static Electricity, Chromatography, Reverse-Phase, Hydrophobic and Hydrophilic Interactions

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review