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Computational protein profile similarity screening for quantitative mass spectrometry experiments

The qualitative and quantitative characterization of protein abundance profiles over a series of time points or a set of environmental conditions is becoming increasingly important. Using isobaric mass tagging experiments, mass spectrometry-based quantitative proteomics deliver accurate peptide abun...

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Bibliographische Detailangaben
Hauptverfasser: Kirchner, Marc (VerfasserIn) , Renard, Bernhard Y. (VerfasserIn) , Köthe, Ullrich (VerfasserIn) , Pappin, Darryl J. (VerfasserIn) , Hamprecht, Fred (VerfasserIn) , Steen, Hanno (VerfasserIn) , Steen, Judith A. J. (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 2010
In: Bioinformatics
Year: 2010, Jahrgang: 26, Heft: 1, Pages: 77-83
ISSN:1367-4811
DOI:10.1093/bioinformatics/btp607
Online-Zugang:Resolving-System, lizenzpflichtig, Volltext: https://doi.org/10.1093/bioinformatics/btp607
Verlag, lizenzpflichtig, Volltext: https://academic.oup.com/bioinformatics/article/26/1/77/181891
Volltext
Verfasserangaben:Marc Kirchner, Bernhard Y. Renard, Ullrich Köthe, Darryl J. Pappin, Fred A. Hamprecht, Hanno Steen and Judith A.J. Steen
Beschreibung
Zusammenfassung:The qualitative and quantitative characterization of protein abundance profiles over a series of time points or a set of environmental conditions is becoming increasingly important. Using isobaric mass tagging experiments, mass spectrometry-based quantitative proteomics deliver accurate peptide abundance profiles for relative quantitation. Associated data analysis workflows need to provide tailored statistical treatment that (i) takes the correlation structure of the normalized peptide abundance profiles into account and (ii) allows inference of protein-level similarity. We introduce a suitable distance measure for relative abundance profiles, derive a statistical test for equality and propose a protein-level representation of peptide-level measurements. This yields a workflow that delivers a similarity ranking of protein abundance profiles with respect to a defined reference. All procedures have in common that they operate based on the true correlation structure that underlies the measurements. This optimizes power and delivers more intuitive and efficient results than existing methods that do not take these circumstances into account.
Beschreibung:Online veröffentlicht am 27. Oktober 2009
Gesehen am 14.03.2023
Beschreibung:Online Resource
ISSN:1367-4811
DOI:10.1093/bioinformatics/btp607

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