Evidence map›Paper›PMID 19186121›Full record

ArticleBiophysical journal2009

Interaction between amyloid-beta (1-42) peptide and phospholipid bilayers: a molecular dynamics study.

Charles H Davis, Max L Berkowitz

Erratum issuedOpen access · bronzeAbstract read
In one paragraph

Article in Biophysical journal, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 37 papers.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed
4.3field-weighted citation impact, top 5% 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

37 citing papers in PubMed, 113 citations in OpenAlex.

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  10. Defining the Neuropathological Aggresome acrossThe journal of physical chemistry. B · 2021
    Review
  11. Article
  12. The membrane axis of Alzheimer's nanomedicine.Advanced nanobiomed research · 2021
    Article
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4 · The record

Corrections and comments

  • Erratum issued
5 · Who and what money

Authors and funding

2 authors at 1 institution in 1 country.

Charles H DavisDepartment of Biochemistry and Biophysics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA. cdavis@email.unc.edu
Max L Berkowitz
University of North Carolina at Chapel Hill · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The amyloid-beta (Abeta) peptide is a key aggregate species in Alzheimer's disease. Although important aspects of Abeta peptide aggregation are understood, the initial stage of aggregation from monomer to oligomer is still not clear. One potential mediator of this early aggregation process is interactions of Abeta with anionic cell membranes. We used unconstrained and umbrella sampling molecular dynamics simulations to investigate interactions between the 42-amino acid Abeta peptide and model bilayers of zwitterionic dipalmitoylphosphatidylcholine (DPPC) lipids and anionic dioleoylphosphatidylserine (DOPS) lipids. Using these methods, we determined that Abeta is attracted to the surface of DPPC and DOPS bilayers over the small length scales used in these simulations. We also found supporting evidence that the charge on both the bilayer surface and the peptide affects the free energy of binding of the peptide to the bilayer surface and the distribution of the peptide on the bilayer surface. Our work demonstrates that interactions between the Abeta peptide and lipid bilayer promotes a peptide distribution on the bilayer surface that is prone to peptide-peptide interactions, which can influence the propensity of Abeta to aggregate into higher-order structures.

Indexed as

Models, Molecular1,2-DipalmitoylphosphatidylcholineAmyloid beta-PeptidesBiocatalysisCell MembraneLipid BilayersNeurodegenerative DiseasesPeptide FragmentsPhosphatidylserinesPhospholipidsProtein BindingProtein Structure, SecondaryReproducibility of ResultsThermodynamics1,2-dioleoylphosphatidylserine1,2-DipalmitoylphosphatidylcholineAmyloid beta-Peptidesamyloid beta-protein (1-42)Lipid BilayersPeptide FragmentsPhosphatidylserinesPhospholipids

Identifiers

PMID19186121
PMCPMC2716579
OpenAlexW2033451537

What OpenQuestion holds

Textmetadata
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.