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J Proteomics. 2012 Jun 27;75(12):3495-513. doi: 10.1016/j.jprot.2012.04.048. Epub 2012 May 8.

Targeted proteome investigation via selected reaction monitoring mass spectrometry.

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  • 1Department of Biology, Institute of Molecular Systems Biology, Zurich, Switzerland.

Abstract

Due to the enormous complexity of proteomes which constitute the entirety of protein species expressed by a certain cell or tissue, proteome-wide studies performed in discovery mode are still limited in their ability to reproducibly identify and quantify all proteins present in complex biological samples. Therefore, the targeted analysis of informative subsets of the proteome has been beneficial to generate reproducible data sets across multiple samples. Here we review the repertoire of antibody- and mass spectrometry (MS) -based analytical tools which is currently available for the directed analysis of predefined sets of proteins. The topics of emphasis for this review are Selected Reaction Monitoring (SRM) mass spectrometry, emerging tools to control error rates in targeted proteomic experiments, and some representative examples of applications. The ability to cost- and time-efficiently generate specific and quantitative assays for large numbers of proteins and posttranslational modifications has the potential to greatly expand the range of targeted proteomic coverage in biological studies. This article is part of a Special Section entitled: Understanding genome regulation and genetic diversity by mass spectrometry.

Copyright © 2012 Elsevier B.V. All rights reserved.

PMID:
22579752
[PubMed - indexed for MEDLINE]
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