An accurate mass tag strategy for quantitative and high-throughput proteome measurements. Smith, R. D., Anderson, G. A., Lipton, M. S., Pasa-Tolic, L., Shen, Y., Conrads, T. P., Veenstra, T. D., & Udseth, H. R. Proteomics, 2:513–523, 2002. Issue 5doi abstract bibtex We describe and demonstrate a global strategy that extends the sensitivity, dynamic range, comprehensiveness, and throughput of proteomic measurements based upon the use of peptide "accurate mass tags" (AMTs) produced by global protein enzymatic digestion. The two-stage strategy exploits Fourier transform-ion cyclotron resonance (FT-ICR) mass spectrometry to validate peptide AMTs for a specific organism, tissue or cell type from "potential mass tags" identified using conventional tandem mass spectrometry (MS/MS) methods, providing greater confidence in identifications as well as the basis for subsequent measurements without the need for MS/MS, and thus with greater sensitivity and increased throughput. A single high resolution capillary liquid chromatography separation combined with high sensitivity, high resolution and accurate FT-ICR measurements has been shown capable of characterizing peptide mixtures of significantly more than 105 components with mass accuracies of <1 ppm, sufficient for broad protein identification using AMTs. Other attractions of the approach include the broad and relatively unbiased proteome coverage, the capability for exploiting stable isotope labeling methods to realize high precision for relative protein abundance measurements, and the projected potential for study of mammalian proteomes when combined with additional sample fractionation. Using this strategy, in our first application we have been able to identify AMTs for ~60% of the potentially expressed proteins in the organism Deinococcus radiodurans.
@Article{smith02accurate,
author = {Richard D. Smith and Gordon A. Anderson and Mary S. Lipton and Ljiljana Pasa-Tolic and Yufeng Shen and Thomas P. Conrads and Timothy D. Veenstra and Harold R. Udseth},
title = {An accurate mass tag strategy for quantitative and high-throughput proteome measurements},
journal = {Proteomics},
year = {2002},
volume = {2},
pages = {513--523},
note = {Issue 5},
abstract = {We describe and demonstrate a global strategy that extends the sensitivity, dynamic range, comprehensiveness, and throughput of proteomic measurements based upon the use of peptide "accurate mass tags" (AMTs) produced by global protein enzymatic digestion. The two-stage strategy exploits Fourier transform-ion cyclotron resonance (FT-ICR) mass spectrometry to validate peptide AMTs for a specific organism, tissue or cell type from "potential mass tags" identified using conventional tandem mass spectrometry (MS/MS) methods, providing greater confidence in identifications as well as the basis for subsequent measurements without the need for MS/MS, and thus with greater sensitivity and increased throughput. A single high resolution capillary liquid chromatography separation combined with high sensitivity, high resolution and accurate FT-ICR measurements has been shown capable of characterizing peptide mixtures of significantly more than 105 components with mass accuracies of <1 ppm, sufficient for broad protein identification using AMTs. Other attractions of the approach include the broad and relatively unbiased proteome coverage, the capability for exploiting stable isotope labeling methods to realize high precision for relative protein abundance measurements, and the projected potential for study of mammalian proteomes when combined with additional sample fractionation. Using this strategy, in our first application we have been able to identify AMTs for ~60\% of the potentially expressed proteins in the organism Deinococcus radiodurans.},
doi = {10.1002/1615-9861(200205)2:5<513::AID-PROT513>3.0.CO;2-W},
file = {SmithEtAl_AccurateMassTag_Proteomics_2002.pdf:2002/SmithEtAl_AccurateMassTag_Proteomics_2002.pdf:PDF},
keywords = {accurate mass tag},
owner = {apervukh},
timestamp = {2009.02.03},
}
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