Cited by 92Microfluidic and Capillary Electrophoresis ApplicationsAdvanced Proteomics Techniques and ApplicationsMass Spectrometry Techniques and Applications

Capillary electrophoresis applied to proteomic analysis

Open access
Fonslow, Bryan R., Yates III, John R.·2009·Journal of Separation Science

Abstract

In the postgenomic era, proteomics has become a dominant field for identifying and quantifying the complex protein machinery of the cell. The expression levels, posttranslational modifications, and specific interactions of proteins control the biology of such processes as development, differentiation, and signal transduction. Studies of the proteins involved in these processes often lead to a better understanding of biology and of human disease. Powerful separation techniques and sensitive detection methods enable researchers to untangle these complicated networks of processes. CE coupled with either MS or LIF are two of the techniques that make this possible. This review will cover proven CE‐based methods for proteomics on the cell and tissue level and their application in biological and clinical studies, relevant new developments in enabling technology such as microfluidic CE‐MS demonstrated on model systems, and comment on the future of CE in proteomics.

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Registry

Crossref · 10.1002/jssc.200800592

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168 of 168 references verified0 citation errors · 0 not checkable

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  • Confident identification and quantification of proteins, PTMs, and peptides in biological samples depends on rigorous peptide separation before mass spectrometry.

    “Confident identification and quantification of proteins, posttranslational modifications (PTMs), and peptides in biological samples rely on rigorous separation of peptides prior to introduction into the mass spectrometer1,5,6.”
  • Top-down analysis can provide unique structural insights into proteins through precise molecular weight measurements, identification of multiple PTMs, and in-depth proteoform characterization.

    “Top-down analysis can provide unique insights into a protein’s structure by providing precise molecular weight measurements, the identification of multiple PTMs5,16,28 and in-depth proteoform characterization (different forms of a single protein generated from a gene)32.”
  • The main challenge of the sheathless configuration is maintaining CE flow while generating a closed electrical circuit between the CE separation and the ESI source.

    “In this configuration, the main challenge is maintaining CE flow while generating a closed electrical circuit between the CE separation and the ESI source5.”
  • A potential limitation of the sheath-liquid interface is that high sheath-liquid flow dilutes the analyte and can cause sensitivity loss.

    “A potential limitation of the sheath-liquid interface is that the high flow rate of the sheath-liquid dilutes the analyte, thereby causing a potential loss in sensitivity5,13.”
  • The sheathless interface can significantly enhance signal-to-noise because analyte dilution and background noise are decreased when the BGE is the only liquid.

    “In contrast, the sheathless interface can significantly enhance signal/noise due to decreased analyte dilution and background noise, as the BGE is the only liquid in the system5,54.”

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1 of the 169 references couldn’t be matched to a known paper.

Research works printed but not linked: 2

  1. [98]Mohan D Lee CS Electrophoresis 2002 23 3160 3167 12298088
  2. [110]Kelleher NL Analytical chemistry 2004 76 197A 203A 15190879

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Authors
Fonslow, B. R., & Yates III, J. R.
Affiliations
Scripps Research Institute (US)
Venue
Journal of Separation Science
Publisher
Wiley
Published
2009-04
Volume
32
Issue
8
Pages
1175-1188
ISSN
  • 1615-9306 (ISSN-L)
  • 1615-9314
OpenAlex
W1980949566
Cited by
92
References
169
Citations by year
2025: 1 · 2024: 2 · 2023: 2 · 2022: 1 · 2021: 2 · 2020: 1 · 2019: 4 · 2018: 2 · 2017: 6 · 2016: 4 · 2015: 7 · 2014: 4 · 2013: 11 · 2012: 10
FWCI
8.83
Type
journal article
Language
en
Open access
Locations
  • Journal of Separation Science (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institutes of Health (DK074798-02)
Topics
  • Physical Sciences › Engineering › Biomedical Engineering › Microfluidic and Capillary Electrophoresis Applications
  • Physical Sciences › Chemistry › Spectroscopy › Advanced Proteomics Techniques and Applications
  • Physical Sciences › Chemistry › Spectroscopy › Mass Spectrometry Techniques and Applications
Keywords
capillary electrophoresis, proteomics, post-translational modification, protein-protein interaction, clinical proteomics, protein abundance
MeSH terms
Amino Acid Sequence, Humans, Molecular Sequence Data, Proteins, Sequence Alignment, Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization, Electrophoresis, Capillary, Proteome, Spectrometry, Mass, Electrospray Ionization, Proteomics

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