Cited by 83Advanced Proteomics Techniques and ApplicationsMass Spectrometry Techniques and ApplicationsBioinformatics and Genomic Networks

State of the Human Proteome in 2014/2015 As Viewed through PeptideAtlas: Enhancing Accuracy and Coverage through the AtlasProphet

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Deutsch, Eric W., Sun, Zhi, Campbell, David, Kusebauch, Ulrike, Chu, Caroline S., Mendoza, Luis, Shteynberg, David, Omenn, Gilbert S. +1 more·2015·Journal of Proteome Research

Abstract

The Human PeptideAtlas is a compendium of the highest quality peptide identifications from over 1000 shotgun mass spectrometry proteomics experiments collected from many different laboratories, all reanalyzed through a uniform processing pipeline. The latest 2015-03 build contains substantially more input data than past releases, is mapped to a recent version of our merged reference proteome, and uses improved informatics processing and the development of the AtlasProphet to provide the highest quality results. Within the set of ∼20,000 neXtProt primary entries, 14,070 (70%) are confidently detected in the latest build, 5% are ambiguous, 9% are redundant, leaving the total percentage of proteins for which there are no mapping detections at just 16% (3166), all derived from over 133 million peptide-spectrum matches identifying more than 1 million distinct peptides using AtlasProphet to characterize and classify the protein matches. Improved handling for detection and presentation of single amino-acid variants (SAAVs) reveals the detection of 5326 uniquely mapping SAAVs across 2794 proteins. With such a large amount of data, the control of false positives is a challenge. We present the methodology and results for maintaining rigorous quality along with a discussion of the implications of the remaining sources of errors in the build.

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  • The noncanonical MYBPC3 peptide had not been observed in PeptideAtlas or MassIVE-KB and had no identical match to any sequences of any taxonomy in RefSeq by BLASTP.

    “The noncanonical peptide had not been observed in the peptide repositories PeptideAtlas (housing 1.4M peptides) (Deutsch et al., 2015) or MassIVE-KB (2.3 M peptides) (Wang et al., 2018a) and had no identical match to any sequences of any taxonomy in RefSeq by BLASTP (Boratyn et al., 2013).”

    From Splice-Junction-Based Mapping of Alternative Isoforms in the Human Proteome (2019) · cites this paper as Deutsch et al., 2015

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Authors
Deutsch, E. W., Sun, Z., Campbell, D., Kusebauch, U., Chu, C. S., Mendoza, L., Shteynberg, D., Omenn, G. S., & Moritz, R. L.
Affiliations
  • Institute for Systems Biology (US)
  • University of Michigan (US)
Corresponding author
Deutsch, Eric W.
Venue
Journal of Proteome Research
Published
2015-07-24
Volume
14
Issue
9
Pages
3461-3473
ISSN
  • 1535-3893 (ISSN-L)
  • 1535-3907
OpenAlex
W2409617262
Cited by
80
References
40
Citations by year
2026: 3 · 2025: 3 · 2024: 1 · 2023: 3 · 2022: 5 · 2021: 5 · 2020: 9 · 2019: 9 · 2018: 3 · 2017: 14 · 2016: 12 · 2015: 13
FWCI
6.38
Type
journal article
Language
en
Open access
Locations
  • Journal of Proteome Research (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Science Foundation (0923536)
  • Seventh Framework Programme (260558)
  • National Institute of Environmental Health Sciences (U54ES017885)
  • National Institute of General Medical Sciences (2P50GM076547, R01GM087221)
  • National Human Genome Research Institute (RC2HG005805)
  • National Institute of Biomedical Imaging and Bioengineering (U54EB020406)
Topics
  • Physical Sciences › Chemistry › Spectroscopy › Advanced Proteomics Techniques and Applications
  • Physical Sciences › Chemistry › Spectroscopy › Mass Spectrometry Techniques and Applications
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bioinformatics and Genomic Networks
Keywords
human proteome, peptide identification, peptide-spectrum matches, single amino acid variants, false positive control
MeSH terms
Amino Acid Sequence, Humans, Molecular Sequence Data, Proteins, Sequence Homology, Amino Acid, Amino Acid Substitution, Databases, Protein, Proteomics

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