Cited by 99Advanced Proteomics Techniques and ApplicationsBioinformatics and Genomic NetworksAdvanced Biosensing Techniques and Applications

Systematic detection of functional proteoform groups from bottom-up proteomic datasets

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Bludau, Isabell, Frank, Max, Dörig, Christian, Cai, Yujia, Heusel, Moritz, Rosenberger, George, Picotti, Paola, Collins, Ben C. +2 more·2021·Nature Communications

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Abstract

To a large extent functional diversity in cells is achieved by the expansion of molecular complexity beyond that of the coding genome. Various processes create multiple distinct but related proteins per coding gene – so-called proteoforms – that expand the functional capacity of a cell. Evaluating proteoforms from classical bottom-up proteomics datasets, where peptides instead of intact proteoforms are measured, has remained difficult. Here we present COPF, a tool for COrrelation-based functional ProteoForm assessment in bottom-up proteomics data. It leverages the concept of peptide correlation analysis to systematically assign peptides to co-varying proteoform groups. We show applications of COPF to protein complex co-fractionation data as well as to more typical protein abundance vs. sample data matrices, demonstrating the systematic detection of assembly- and tissue-specific proteoform groups, respectively, in either dataset. We envision that the presented approach lays the foundation for a systematic assessment of proteoforms and their functional implications directly from bottom-up proteomic datasets.

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Authors
Bludau, I., Frank, M., Dörig, C., Cai, Y., Heusel, M., Rosenberger, G., Picotti, P., Collins, B. C., Röst, H., & Aebersold, R.
Affiliations
  • ETH Zurich (CH)
  • University of Toronto (CA)
  • Lund University (SE)
  • Queen's University Belfast (GB)
  • University of Zurich (CH)
Corresponding author
  • Röst, Hannes
  • Aebersold, Ruedi
Venue
Nature Communications
Published
2021-06-21
Volume
12
Issue
1
Pages
3810-3810
ISSN
2041-1723 (ISSN-L)
OpenAlex
W3175993123
Cited by
88
References
82
Citations by year
2026: 11 · 2025: 16 · 2024: 10 · 2023: 19 · 2022: 26 · 2021: 6
FWCI
6.66
Type
journal article
Language
en
Open access
Locations
  • Nature Communications (publishedVersion, cc-by)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Repository for Publications and Research Data (ETH Zurich) (submittedVersion, cc-by)
  • RePEc: Research Papers in Economics (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Lund University Publications (Lund University) (submittedVersion)
  • ETH Zürich Research Collection (cc-by)
Funders
  • National Science Foundation
  • Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung (175127, 173572, ERC-20140AdG 670821, 183933, 161435, 310030E, 191046)
  • SystemsX.ch
Topics
  • Physical Sciences › Chemistry › Spectroscopy › Advanced Proteomics Techniques and Applications
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bioinformatics and Genomic Networks
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Advanced Biosensing Techniques and Applications
Keywords
proteoforms, shotgun proteomics, protein abundance, protein assembly, post-translational modification
MeSH terms
Algorithms, Animals, Humans, Peptides, Benchmarking, Protein Isoforms, Proteomics, Mice, Tandem Mass Spectrometry, Workflow

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