Comparing peptide spectra matches across search engines

Rune Matthiesen, Gorka Prieto, Hans Christian Beck

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

4 Citations (Scopus)

Abstract

Mass spectrometry is extremely efficient for sequencing small peptides generated by, for example, a trypsin digestion of a complex mixture. Current instruments have the capacity to generate 50–100 K MSMS spectra from a single run. Of these ~30–50% is typically assigned to peptide matches on a 1% FDR threshold. The remaining spectra need more research to explain. We address here whether the 30–50% matched spectra provide consensus matches when using different database-dependent search pipelines. Although the majority of the spectra peptide assignments concur across search engines, our conclusion is that database-dependent search engines still require improvements.

Original languageEnglish
Title of host publicationMethods in Molecular Biology
PublisherHumana Press
Pages133-143
Number of pages11
DOIs
Publication statusPublished - 2020

Publication series

NameMethods in Molecular Biology
Volume2051
ISSN (Print)1064-3745
ISSN (Electronic)1940-6029

Keywords

  • Database dependent search
  • Peptide assignments

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