Evidence map›Paper›PMID 12423203›Full record

ArticleThe Biochemical journal2003

Interactions of the designed antimicrobial peptide MB21 and truncated dermaseptin S3 with lipid bilayers: molecular-dynamics simulations.

Craig M Shepherd, Hans J Vogel, D Peter Tieleman

Abstract read
In one paragraph

Article in The Biochemical journal, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing 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

29 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Correlated protein conformational states and membrane dynamics during attack by pore-forming toxins.Proceedings of the National Academy of Sciences of the United States of America · 2019
    Article
  6. Article
  7. Computational studies of peptide-induced membrane pore formation.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2017
    Review
  8. Peptides and Peptidomimetics for Antimicrobial Drug Design.Pharmaceuticals (Basel, Switzerland) · 2015
    Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Free energy profile of H-ras membrane anchor upon membrane insertion.Angewandte Chemie (International ed. in English) · 2007
    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

3 authors.

Craig M ShepherdDepartment of Biological Sciences, University of Calgary, 2500 University Drive N.W., Calgary, AB, Canada T2N 1N4.
Hans J Vogel
D Peter Tieleman

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Molecular-dynamics simulations covering 30 ns of both a natural and a synthetic antimicrobial peptide in the presence of a zwitterionic lipid bilayer were performed. In both simulations, copies of the peptides were placed in an alpha-helical conformation on either side of the bilayer about 10 A (1 A=0.1 nm) from the interface, with either the hydrophobic or the positively charged face of the helix directed toward the bilayer surface. The degree of peptide-lipid interaction was dependent on the starting configuration: surface binding and subsequent penetration of the bilayer was observed for the hydrophobically oriented peptides, while the charge-oriented peptides demonstrated at most partial surface binding. Aromatic residues near the N-termini of the peptides appear to play an important role in driving peptide-lipid interactions. A correlation between the extent of peptide-lipid interactions and helical stability was observed in the simulations. Insertion of the peptides into the bilayer caused a dramatic increase in the lateral area per lipid and decrease in the bilayer thickness, resulting in substantial disordering of the lipid chains. Results from the simulations are consistent with early stages of proposed mechanisms for the lytic activity of antimicrobial peptides. In addition to these 'free' simulations, 25 ns simulations were carried out with the peptides constrained at three different distances relative to the bilayer interface. The constraint forces are in agreement with the extent of peptide-bilayer insertion observed in the free simulations.

Indexed as

Amphibian ProteinsAmino Acid SequenceAntimicrobial Cationic PeptidesLipid BilayersModels, MolecularMolecular Sequence DataPeptidesProtein Structure, SecondaryAmphibian ProteinsAntimicrobial Cationic Peptidesdermaseptin 3 protein, PhyllomedusaLipid BilayersMB21 peptidePeptides

Identifiers

PMID12423203
PMCPMC1223151

What OpenQuestion holds

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Read underepoch 390

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.