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Multiplexed peptide analysis using data-independent acquisition and Skyline

Open access
Egertson, Jarrett D, MacLean, Brendan, Johnson, Richard, Xuan, Yue, MacCoss, Michael J·2015·Nature Protocols

Abstract

Here we describe the use of data-independent acquisition (DIA) on a Q-Exactive mass spectrometer for the detection and quantification of peptides in complex mixtures using the Skyline Targeted Proteomics Environment (freely available online at http://skyline.maccosslab.org). The systematic acquisition of mass spectrometry (MS) or tandem MS (MS/MS) spectra by DIA is in contrast to DDA, in which the acquired MS/MS spectra are only suitable for the identification of a stochastically sampled set of peptides. Similarly to selected reaction monitoring (SRM), peptides can be quantified from DIA data using targeted chromatogram extraction. Unlike SRM, data acquisition is not constrained to a predetermined set of target peptides. In this protocol, a spectral library is generated using data-dependent acquisition (DDA), and chromatograms are extracted from the DIA data for all peptides in the library. As in SRM, quantification using DIA data is based on the area under the curve of extracted MS/MS chromatograms. In addition, a quality control (QC) method suitable for DIA based on targeted MS/MS acquisition is detailed. Not including time spent acquiring data, and time for database searching, the procedure takes ∼1–2 h to complete. Typically, data acquisition requires roughly 1–4 h per sample, and a database search will take 0.5–2 h to complete.

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Metadata

Authors
Egertson, J. D., MacLean, B., Johnson, R., Xuan, Y., & MacCoss, M. J.
Venue
Nature Protocols
Published
2015-05-21
Volume
10
Issue
6
Pages
887-903
ISSN
  • 1750-2799 (ISSN-L)
  • 1754-2189
OpenAlex
W1541396877
Cited by
211
References
6
FWCI
10.19
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Multiplexed peptide analysis using data-independent acquisition and Skyline. https://app.cochat.ai/papers/10.1038/nprot.2015.055
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Egertson, J. D., MacLean, B., Johnson, R., Xuan, Y., & MacCoss, M. J. (2015). Multiplexed peptide analysis using data-independent acquisition and Skyline. Nature Protocols. https://doi.org/10.1038/nprot.2015.055

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