Autopiquer - a Robust and Reliable Peak Detection Algorithm for Mass Spectrometry

David P A Kilgour, Sam Hughes, Samantha L. Kilgour, C. Logan Mackay, Magnus Palmblad, Bao Quoc Tran, Young Ah Goo, Robert K. Ernst, David J. Clarke, David R. Goodlett

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

We present a simple algorithm for robust and unsupervised peak detection by determining a noise threshold in isotopically resolved mass spectrometry data. Solving this problem will greatly reduce the subjective and time-consuming manual picking of mass spectral peaks and so will prove beneficial in many research applications. The Autopiquer approach uses autocorrelation to test for the presence of (isotopic) structure in overlapping windows across the spectrum. Within each window, a noise threshold is optimized to remove the most unstructured data, whilst keeping as much of the (isotopic) structure as possible. This algorithm has been successfully demonstrated for both peak detection and spectral compression on data from many different classes of mass spectrometer and for different sample types, and this approach should also be extendible to other types of data that contain regularly spaced discrete peaks. [Figure not available: see fulltext.]

Original languageEnglish (US)
Pages (from-to)253-262
Number of pages10
JournalJournal of the American Society for Mass Spectrometry
Volume28
Issue number2
DOIs
StatePublished - Feb 1 2017

Keywords

  • Mass spectrometry
  • Peak detection
  • Threshold

ASJC Scopus subject areas

  • Structural Biology
  • Spectroscopy

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