Cited by 89Advanced Proteomics Techniques and ApplicationsMass Spectrometry Techniques and ApplicationsMetabolomics and Mass Spectrometry Studies

Evaluation of the Compact High-Field Orbitrap for Top-Down Proteomics of Human Cells

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Ahlf, Dorothy R., Compton, Philip D., Tran, John C., Early, Bryan P., Thomas, Paul M., Kelleher, Neil L.·2012·Journal of Proteome Research

Abstract

Mass spectrometry based proteomics generally seeks to identify and fully characterize protein species with high accuracy and throughput. Recent improvements in protein separation have greatly expanded the capacity of top-down proteomics (TDP) to identify a large number of intact proteins. To date, TDP has been most tightly associated with Fourier transform ion cyclotron resonance (FT-ICR) mass spectrometry. Here, we couple the improved separations to a Fourier-transform instrument based not on ICR but using the Orbitrap Elite mass analyzer. Application of this platform to H1299 human lung cancer cells resulted in the unambiguous identification of 690 unique proteins and over 2000 proteoforms identified from proteins with intact masses<50 kDa. This is an early demonstration of high throughput TDP (>500 identifications) in an Orbitrap mass spectrometer and exemplifies an accessible platform for whole protein mass spectrometry.

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  • Top-down proteomics is currently applied mainly to proteoforms smaller than 30 kDa, because high-resolution FTMS performs poorly for larger proteoforms and intact proteomes in the 30-60 kDa range are highly complex.

    “top-down proteomics (TDP) is currently mostly applied to the characterization of proteoforms <30 kDa due to the poor performance of high-resolution FTMS for the analysis of larger proteoforms and the high complexity of intact proteomes in the 30–60 kDa mass range.”

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Research works printed but not linked: 1

  1. [12]Lange O Damoc E Wieghaus A Makarov A Enhanced FT for Orbitrap Mass Spectrometry Presented at the 59th ASMS Conference on Mass Spectrometry 2011

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Authors
Ahlf, D. R., Compton, P. D., Tran, J. C., Early, B. P., Thomas, P. M., & Kelleher, N. L.
Affiliations
Northwestern University (US)
Corresponding author
Kelleher, Neil L.
Venue
Journal of Proteome Research
Published
2012-07-13
Volume
11
Issue
8
Pages
4308-4314
ISSN
  • 1535-3893 (ISSN-L)
  • 1535-3907
OpenAlex
W1964946814
Cited by
89
References
26
Citations by year
2026: 2 · 2024: 2 · 2023: 1 · 2022: 1 · 2021: 5 · 2020: 5 · 2019: 4 · 2018: 8 · 2017: 10 · 2016: 11 · 2015: 13 · 2014: 10 · 2013: 14 · 2012: 1
FWCI
5.37
Type
journal article
Language
en
Open access
Locations
  • Journal of Proteome Research (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Science Foundation
  • Chicago Community Trust
  • Northwestern University
  • Chicago Biomedical Consortium
  • National Institutes of Health
  • National Institute on Drug Abuse (DA018310, P30DA018310)
  • National Institute of General Medical Sciences (R01GM067193, GM 067193)
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 › Metabolomics and Mass Spectrometry Studies
Keywords
top-down proteomics, proteoforms, H1299 cells, high-throughput proteomics, protein mass spectrometry
MeSH terms
Amino Acid Sequence, Camptothecin, DNA Damage, Fourier Analysis, Humans, Molecular Sequence Data, Peptide Fragments, Peptide Mapping, Reference Standards, Cellular Senescence, Proteome, Proteomics, Cell Line, Tumor, Tandem Mass Spectrometry, Topoisomerase Inhibitors, Cell Cycle Checkpoints

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