Evidence map›Paper›PMID 20845333›Full record

ArticleProteomics2010

Data-directed top-down Fourier-transform mass spectrometry of a large integral membrane protein complex: photosystem II from Galdieria sulphuraria.

Balakumar Thangaraj, Christopher M Ryan, Puneet Souda, Kirsten Krause, Kym F Faull, Andreas P M Weber, Petra Fromme, Julian P Whitelegge

Abstract readEvaluation Study
In one paragraph

Article in Proteomics, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing 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

28 citing papers in PubMed.

  1. Article
  2. Article
  3. Top-Down Identification and Sequence Analysis of Small Membrane Proteins Using MALDI-MS/MS.Journal of the American Society for Mass Spectrometry · 2022
    Article
  4. Article
  5. Article
  6. Review
  7. Mass spectrometry-based cross-linking study shows that the Psb28 protein binds to cytochromeProceedings of the National Academy of Sciences of the United States of America · 2017
    Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Top Down proteomics: facts and perspectives.Biochemical and biophysical research communications · 2014
    Review
  19. Article
  20. Article
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

8 authors.

Balakumar ThangarajDepartment of Chemistry and Biochemistry, Arizona State University, Tempe, AZ 90024, USA.
Christopher M Ryan
Puneet Souda
Kirsten Krause
Kym F Faull
Andreas P M Weber
Petra Fromme
Julian P Whitelegge

Funding

High Resolution Hybrid FT-ICR Mass SpectrometerS10RR023045 · NCRR · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI LOO, JOSEPH A · 2006 to 2006
$1.2M
NCRR NIH HHS S10 RR023045
6 · The paper itself

Abstract

High-resolution top-down MS was used to characterize eleven integral and five peripheral subunits of the 750 kDa photosystem II complex from the eukaryotic red alga, Galdieria sulphuraria. The primary separation used LC MS with concomitant fraction collection (LC-MS+), yielding around 40 intact mass tags at 100 ppm mass accuracy on a low-resolution ESI mass spectrometer, whose retention and mass were used to guide subsequent high-resolution top-down nano-electrospray FT ion-cyclotron resonance MS experiments (FT-MS). Both collisionally activated and electron capture dissociation were used to confirm the presence of eleven small subunits to mass accuracy within 5 ppm; PsbE, PsbF, PsbH, PsbI, PsbJ, PsbK, PsbL, PsbM, PsbT, PsbX and PsbZ. All subunits showed covalent modifications that fall into three classes including retention of initiating formyl-methionine, removal of methionine at the N-terminus with or without acetylation, and removal of a longer N-terminal peptide. Peripheral subunits identified by top-down analysis included oxygen-evolving complex subunits PsbO, PsbU, PsbV, as well as Psb28 (PsbW) and Psb27 ("PsbZ-like"). Top-down high-resolution MS provides the necessary precision, typically less than 5 ppm, for identification and characterization of polypeptide composition of these important membrane protein complexes.

Indexed as

Fourier AnalysisAmino Acid SequenceMembrane ProteinsMolecular Sequence DataPhotosystem II Protein ComplexProtein SubunitsRhodophytaTandem Mass SpectrometryMembrane ProteinsPhotosystem II Protein ComplexProtein Subunits

Identifiers

PMID20845333
PMCPMC3517113

What OpenQuestion holds

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Registered trials

None linked

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.