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Prediction of peptide mass spectral libraries with machine learning

Cox, Juergen
Journal article, Peer reviewed
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URI
https://hdl.handle.net/11250/3063554
Date
2022
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  • Department of Biological and Medical Psychology [379]
  • Registrations from Cristin [8669]
Original version
Nature Biotechnology. 2022, 41, 33-43.   10.1038/s41587-022-01424-w
Abstract
The recent development of machine learning methods to identify peptides in complex mass spectrometric data constitutes a major breakthrough in proteomics. Longstanding methods for peptide identification, such as search engines and experimental spectral libraries, are being superseded by deep learning models that allow the fragmentation spectra of peptides to be predicted from their amino acid sequence. These new approaches, including recurrent neural networks and convolutional neural networks, use predicted in silico spectral libraries rather than experimental libraries to achieve higher sensitivity and/or specificity in the analysis of proteomics data. Machine learning is galvanizing applications that involve large search spaces, such as immunopeptidomics and proteogenomics. Current challenges in the field include the prediction of spectra for peptides with post-translational modifications and for cross-linked pairs of peptides. Permeation of machine-learning-based spectral prediction into search engines and spectrum-centric data-independent acquisition workflows for diverse peptide classes and measurement conditions will continue to push sensitivity and dynamic range in proteomics applications in the coming years.
Publisher
Nature
Journal
Nature Biotechnology
Copyright
Copyright 2022 The Author(s)

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