Cited by 30Mass Spectrometry Techniques and ApplicationsMicrofluidic and Capillary Electrophoresis ApplicationsAdvanced Proteomics Techniques and Applications

Evaluation of a commercial electro-kinetically pumped sheath-flow nanospray interface coupled to an automated capillary zone electrophoresis system

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Peuchen, Elizabeth H., Zhu, Guije, Sun, Liangliang, Dovichi, Norman J.·2017·Analytical and Bioanalytical Chemistry

Abstract

Capillary zone electrophoresis-electrospray ionization-mass spectrometry (CZE-ESI-MS) is attracting renewed attention for proteomic and metabolomic analysis. An important reason for this interest is the maturation and commercialization of interfaces for coupling CZE with ESI-MS. One of these interfaces is an electro-kinetically pumped sheath flow nanospray interface developed by the Dovichi group, in which a very low sheath flow is generated based on electroosmosis within a glass emitter. CMP Scientific has commercialized this interface as the EMASS-II ion source. In this work, we compared the performance of the EMASS-II ion source with our in-house system. The performance of the systems is equivalent. We also coupled the EMASS-II ion source with a PrinCE Next|480 capillary electrophoresis autosampler and an Orbitrap mass spectrometer, and analyzed this system's performance in terms of sensitivity, reproducibility, and separation performance for separation of tryptic digests, intact proteins, and amino acids. The system produced reproducible analysis of BSA digest; the RSDs of peptide intensity and migration time across 24 runs were less than 20 and 6%, respectively. The system produced a linear calibration curve of intensity across a 30-fold range of tryptic digest concentration. The combination of a commercial autosampler and electrospray interface efficiently separated amino acids, peptides, and intact proteins, and only required 5 μL of sample for analysis. Graphical Abstract The commercial and locally constructed versions of the interface provide similar numbers of protein identifications from a Xenopus laevis fertilized egg digest.

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Authors
Peuchen, E. H., Zhu, G., Sun, L., & Dovichi, N. J.
Affiliations
University of Notre Dame (US)
Venue
Analytical and Bioanalytical Chemistry
Published
2016-12-16
Volume
409
Issue
7
Pages
1789-1795
ISSN
  • 1618-2642 (ISSN-L)
  • 1618-2650
OpenAlex
W2561108669
Cited by
30
References
21
Citations by year
2023: 2 · 2022: 5 · 2021: 3 · 2020: 4 · 2019: 6 · 2018: 4 · 2017: 6
FWCI
2.65
Type
journal article
Language
en
Open access
Locations
  • Analytical and Bioanalytical Chemistry (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Science Foundation (DGE-1313583)
  • National Institutes of Health (R01HD084399)
Topics
  • Physical Sciences › Chemistry › Spectroscopy › Mass Spectrometry Techniques and Applications
  • Physical Sciences › Engineering › Biomedical Engineering › Microfluidic and Capillary Electrophoresis Applications
  • Physical Sciences › Chemistry › Spectroscopy › Advanced Proteomics Techniques and Applications
Keywords
electrokinetic pumping, capillary zone electrophoresis, electrospray ionization, Orbitrap mass spectrometry, tryptic digest, intact protein separation, amino acid separation, peptide identification
MeSH terms
Amino Acids, Automation, Calibration, Kinetics, Peptides, Reproducibility of Results, Electrophoresis, Capillary, Spectrometry, Mass, Electrospray Ionization

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