Evidence map›Paper›PMID 25729266›Full record

ArticleProteomics insights2010

How Many proteins are Missed in Quantitative proteomics Based on Ms/Ms sequencing Methods?

Claire Mulvey, Bettina Thur, Mark Crawford, Jasminka Godovac-Zimmermann

Abstract read
In one paragraph

Article in Proteomics insights, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing 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

4 citing papers in PubMed.

  1. Review
  2. Article
  3. Article
  4. Review
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.

Claire MulveyDivision of Medicine, University College London, 5 University Street, London WC1E 6JF, UK.
Bettina ThurDivision of Medicine, University College London, 5 University Street, London WC1E 6JF, UK.
Mark CrawfordDivision of Medicine, University College London, 5 University Street, London WC1E 6JF, UK.
Jasminka Godovac-ZimmermannDivision of Medicine, University College London, 5 University Street, London WC1E 6JF, UK.

Funding

Wellcome Trust 081879
6 · The paper itself

Abstract

Current bottom-up quantitative proteomics methods based on MS/MS sequencing of peptides are shown to be strongly dependent on sample preparation. Using cytosolic proteins from MCF-7 breast cancer cells, it is shown that protein pre-fractionation based on pI and MW is more effective than pre-fractionation using only MW in increasing the number of observed proteins (947 vs. 704 proteins) and the number of spectral counts per protein. Combination of MS data from the different pre-fractionation methods results in further improvements (1238 proteins). We discuss that at present the main limitation on quantitation by MS/MS sequencing is not MS sensitivity and protein abundance, but rather extensive peptide overlap and limited MS/MS sequencing throughput, and that this favors internally calibrated methods such as SILAC, ICAT or ITRAQ over spectral counting methods in attempts to drastically improve proteome coverage of biological samples.

Indexed as

mass spectrometryMS/MS sequencingproteomics

Identifiers

PMID25729266
PMCPMC4340538

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.