Evidence map›Paper›PMID 21175207›Full record

ArticleAnalytical chemistry2011

On the accuracy and limits of peptide fragmentation spectrum prediction.

Sujun Li, Randy J Arnold, Haixu Tang, Predrag Radivojac

Abstract read
In one paragraph

Article in Analytical chemistry, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

26 citing papers in PubMed.

  1. Article
  2. Review
  3. Article
  4. Review
  5. Mass Spectral Library for DNA Adductomics.Chemical research in toxicology · 2024
    Article
  6. Article
  7. Review
  8. Review
  9. Article
  10. Review
  11. Article
  12. Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Sujun LiSchool of Informatics and Computing, Indiana University, Bloomington, Indiana 47408, USA.
Randy J Arnold
Haixu Tang
Predrag Radivojac

Funding

APT: the Analytical Proteomics TeamU24CA126480 · NCI · PURDUE UNIVERSITY · PI REGNIER, FRED E · 2006 to 2010
$6.4M
Computational approaches to protein identification and quantification using MS/MSR01GM103725 · NIGMS · TRUSTEES OF INDIANA UNIVERSITY · PI RADIVOJAC, PREDRAG · 2012 to 2015
$1.7M
Computational approaches to protein identification and quantification using MS/MSR01RR024236 · NCRR · TRUSTEES OF INDIANA UNIVERSITY · PI RADIVOJAC, PREDRAG · 2008 to 2010
$810k
NCI NIH HHS U24 CA126480NCRR NIH HHS R01 RR024236NIGMS NIH HHS R01 GM103725
6 · The paper itself

Abstract

We estimated the reproducibility of tandem mass spectra for the widely used collision-induced dissociation (CID) of peptide ions. Using the Pearson correlation coefficient as a measure of spectral similarity, we found that the within-experiment reproducibility of fragment ion intensities is very high (about 0.85). However, across different experiments and instrument types/setups, the correlation decreases by more than 15% (to about 0.70). We further investigated the accuracy of current predictors of peptide fragmentation spectra and found that they are more accurate than the ad-hoc models generally used by search engines (e.g., SEQUEST) and, surprisingly, approaching the empirical upper limit set by the average across-experiment spectral reproducibility (especially for charge +1 and charge +2 precursor ions). These results provide evidence that, in terms of accuracy of modeling, predicted peptide fragmentation spectra provide a viable alternative to spectral libraries for peptide identification, with a higher coverage of peptides and lower storage requirements. Furthermore, using five data sets of proteome digests by two different proteases, we find that PeptideART (a data-driven machine learning approach) is generally more accurate than MassAnalyzer (an approach based on a kinetic model for peptide fragmentation) in predicting fragmentation spectra but that both models are significantly more accurate than the ad-hoc models.

Indexed as

DeinococcusMass SpectrometryPeptide FragmentsProteomeReproducibility of ResultsSaccharomyces cerevisiaeShewanellaPeptide FragmentsProteome

Identifiers

PMID21175207
PMCPMC3036742

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.