Evidence map›Paper›PMID 10585936›Full record

ArticleBiophysical journal1999

Orientation of cecropin A helices in phospholipid bilayers determined by solid-state NMR spectroscopy.

F M Marassi, S J Opella, P Juvvadi, R B Merrifield

Abstract read
In one paragraph

Article in Biophysical journal, 1999. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.

0numbers the graph read from it
0cells of the map it votes in
35citing 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

35 citing papers in PubMed.

  1. Review
  2. Beyond static pores: A dynamic mechanism of antimicrobial action.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  3. Article
  4. Article
  5. Identification and recombinant expression of an antimicrobial peptide (cecropin B-like) from soybean pestThe journal of venomous animals and toxins including tropical diseases · 2021
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. A common landscape for membrane-active peptides.Protein science : a publication of the Protein Society · 2013
    Review
  12. The discreet charm of the curve.Biophysical journal · 2013
    Article
  13. Article
  14. Review
  15. Crystallization and preliminary X-ray analysis of cecropin B from Bombyx mori.Acta crystallographica. Section F, Structural biology and crystallization communications · 2010
    Article
  16. Article
  17. Article
  18. Article
  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

4 authors.

F M MarassiDepartment of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
S J Opella
P Juvvadi
R B Merrifield

Funding

SOLID-STATE NMR OF PEPTIDESR01GM029754 · NIGMS · UNIVERSITY OF PENNSYLVANIA · PI OPELLA, STANLEY J · 1985 to 2002
$670k
NCRR NIH HHS P41RR09731NIGMS NIH HHS GM29754
6 · The paper itself

Abstract

The orientation of the insect antibiotic peptide cecropin A (CecA) in the phospholipid bilayer membrane was determined using (15)N solid-state NMR spectroscopy. Two peptide samples, each specifically labeled with (15)N at Val(11) or Ala(27), were synthesized by solid phase techniques. The peptides were incorporated into phospholipid bilayers, prepared from a mixture of dimyristoylphosphatidylcholine and dimyristoylphosphatidylglycerol, and oriented on glass slides. The (15)N chemical shift solid-state NMR spectra from these uniaxially oriented samples display a single (15)N chemical shift frequency for each labeled residue. Both frequencies are near the upfield end of the (15)N chemical shift powder pattern, as expected for an alpha-helix with its long axis in the plane of the membrane and the NH bonds perpendicular to the direction of the magnetic field. These results support a mechanism of action in which CecA binds to and covers the membrane surface, thereby causing a general destabilization and leakiness of the lipid bilayer membrane. The data are discussed in relation to a proposed mechanism of membrane lysis and bacterial killing via an ion channel activity of CecA.

Indexed as

Antimicrobial Cationic PeptidesAmino Acid SequenceAnimalsAnti-Infective AgentsBiophysical PhenomenaBiophysicsInsect ProteinsIn Vitro TechniquesLipid BilayersMagnetic Resonance SpectroscopyMolecular Sequence DataPeptidesProtein Structure, SecondaryAnti-Infective AgentsAntimicrobial Cationic Peptidescecropin AInsect ProteinsLipid BilayersPeptides

Identifiers

PMID10585936
PMCPMC1300585

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.