Cited by 220Advanced Proteomics Techniques and ApplicationsMass Spectrometry Techniques and ApplicationsAdvanced Biosensing Techniques and Applications

Triplex protein quantification based on stable isotope labeling by peptide dimethylation applied to cell and tissue lysates

Boersema, Paul J., Aye, Thin Thin, van Veen, Toon A. B., Heck, Albert J. R., Mohammed, Shabaz·2008·PROTEOMICS

Abstract

Stable isotope labeling is at present one of the most powerful methods in quantitative proteomics. Stable isotope labeling has been performed at both the protein as well as the peptide level using either metabolic or chemical labeling. Here, we present a straightforward and cost-effective triplex quantification method that is based on stable isotope dimethyl labeling at the peptide level. Herein, all proteolytic peptides are chemically labeled at their alpha- and epsilon-amino groups. We use three different isotopomers of formaldehyde to enable the parallel analysis of three different samples. These labels provide a minimum of 4 Da mass difference between peaks in the generated peptide triplets. The method was evaluated based on the quantitative analysis of a cell lysate, using a typical "shotgun" proteomics experiment. While peptide complexity was increased by introducing three labels, still more than 1300 proteins could be identified using 60 microg of starting material, whereby more than 600 proteins could be quantified using at least four peptides per protein. The triplex labeling was further utilized to distinguish specific from aspecific cAMP binding proteins in a chemical proteomics experiment using immobilized cAMP. Thereby, differences in abundance ratio of more than two orders of magnitude could be quantified.

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Crossref · 10.1002/pmic.200800297

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Authors
Boersema, P. J., Aye, T. T., van Veen, T. A. B., Heck, A. J. R., & Mohammed, S.
Affiliations
Utrecht University (NL)
Corresponding author
Mohammed, Shabaz
Venue
PROTEOMICS
Publisher
Wiley
Published
2008-11
Volume
8
Issue
22
Pages
4624-4632
ISSN
  • 1615-9853 (ISSN-L)
  • 1615-9861
OpenAlex
W2163021396
Cited by
220
References
23
Citations by year
2026: 2 · 2025: 4 · 2024: 5 · 2023: 4 · 2022: 4 · 2021: 7 · 2020: 13 · 2019: 14 · 2018: 13 · 2017: 13 · 2016: 22 · 2015: 27 · 2014: 20 · 2013: 18 · 2012: 16
FWCI
5.48
Type
journal article
Language
en
Open access
closed
Locations
  • PROTEOMICS (publishedVersion)
  • PubMed (publishedVersion)
Funders
Netherlands Proteomics Centre
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 › Advanced Biosensing Techniques and Applications
Keywords
stable isotope labeling, quantitative proteomics, cell lysate, tissue lysates, shotgun proteomics, chemoproteomics, cAMP-binding protein, protein abundance
MeSH terms
Cyclic AMP, Animals, Borohydrides, Chromatography, Ion Exchange, Chromatography, Liquid, Leukemia, Erythroblastic, Acute, Formaldehyde, Isomerism, Isotope Labeling, Methylation, Peptides, Protein Binding, Proteins, Mass Spectrometry, Tumor Cells, Cultured, Rats, Wistar, Spectrometry, Mass, Electrospray Ionization, Proteomics, Rats, Tandem Mass Spectrometry

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