Evidence map›Paper›PMID 17904379›Full record

ArticleJournal of the American Society for Mass Spectrometry2007

Abundant b-type ions produced in electron capture dissociation of peptides without basic amino acid residues.

Haichuan Liu, Kristina Håkansson

Abstract read
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In one paragraph

Article in Journal of the American Society for Mass Spectrometry, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
1.9field-weighted citation impact, top 15% of its field
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

9 citing papers in PubMed, 29 citations in OpenAlex.

  1. Analytical applications of gas-phase ion chemistry enabled by mass spectrometry.Analytical methods : advancing methods and applications · 2026
    Review
  2. Electron capture dissociation of hydrogen-deficient peptide radical cations.Journal of the American Society for Mass Spectrometry · 2012
    Article
  3. Article
  4. Article
  5. Unusual fragmentation of β-linked peptides by ExD tandem mass spectrometry.Journal of the American Society for Mass Spectrometry · 2011
    Article
  6. Peptide fragmentation by corona discharge induced electrochemical ionization.Journal of the American Society for Mass Spectrometry · 2010
    Article
  7. Article
  8. Charge remote fragmentation in electron capture and electron transfer dissociation.Journal of the American Society for Mass Spectrometry · 2010
    Article
  9. 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

2 authors at 1 institution in 1 country.

Haichuan LiuDepartment of Chemistry, University of Michigan, Ann Arbor, Michigan 48109-1055, USA.
Kristina Håkansson
University of Michigan–Ann Arbor · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We have investigated electron capture dissociation (ECD) of doubly protonated peptides with few or no basic amino acid residues (BAARs). For peptides containing one His, abundant b-type ions were only found when His was located adjacent to the N-terminus. Interestingly, b-type ions, particularly b(5)(+), were found to be the dominant product ions in ECD of peptides without BAARs. Fragmentation patterns of luteinizing hormone releasing hormone (LHRH) and vasopressin (VP), containing one Arg and one His, respectively, were compared to those of Q(8)-LHRH and oxytocin (OT) in which the BAAR is replaced with a non-BAAR. More b-type ions were found for Q(8)-LHRH and OT than for LHRH and VP. We also performed ECD of melittin and found no b-type ions from ECD of the 4+ charge state; however, many low abundance b-type ions were produced in ECD of the 5+ charge state. Possible mechanisms for the formation of b-type ions are discussed and we propose that such ions are formed as a consequence of protons being located at backbone amide nitrogens.

Indexed as

Amino Acids, BasicIonsPeptide FragmentsPeptidesSpectrometry, Mass, Electrospray IonizationSpectroscopy, Fourier Transform InfraredStatic ElectricityTandem Mass SpectrometryAmino Acids, BasicIonsPeptide FragmentsPeptides

Identifiers

PMID17904379
OpenAlexW2136485787

What OpenQuestion holds

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Read underepoch 390

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.