Evidence map›Paper›PMID 25885324›Full record

ArticlePLoS computational biology2015

Interaction of the antimicrobial peptide polymyxin B1 with both membranes of E. coli: a molecular dynamics study.

Nils A Berglund, Thomas J Piggot, Damien Jefferies, Richard B Sessions, Peter J Bond, Syma Khalid

Open access · goldAbstract read
In one paragraph

Article in PLoS computational biology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 80 papers.

0numbers the graph read from it
0cells of the map it votes in
80citing papers in PubMed
9.6field-weighted citation impact, top 1% 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

80 citing papers in PubMed, 184 citations in OpenAlex.

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20 more citing papers are in PubMed but not listed here.

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

6 authors at 3 institutions in 2 countries.

Nils A BerglundSchool of Chemistry, University of Southampton, Highfield, Southampton, United Kingdom; Bioinformatics Institute (A*STAR), Singapore.
Thomas J PiggotSchool of Chemistry, University of Southampton, Highfield, Southampton, United Kingdom.
Damien JefferiesSchool of Chemistry, University of Southampton, Highfield, Southampton, United Kingdom.
Richard B SessionsSchool of Biochemistry, Bristol, United Kingdom.
Peter J BondBioinformatics Institute (A*STAR), Singapore; Department of Biological Sciences, National University of Singapore, Singapore.
Syma KhalidSchool of Chemistry, University of Southampton, Highfield, Southampton, United Kingdom.
University of Southampton · GBAgency for Science, Technology and Research · SGAt Bristol · GB

Funding

Biotechnology and Biological Sciences Research Council BB/H000658/1
6 · The paper itself

Abstract

Antimicrobial peptides are small, cationic proteins that can induce lysis of bacterial cells through interaction with their membranes. Different mechanisms for cell lysis have been proposed, but these models tend to neglect the role of the chemical composition of the membrane, which differs between bacterial species and can be heterogeneous even within a single cell. Moreover, the cell envelope of Gram-negative bacteria such as E. coli contains two membranes with differing compositions. To this end, we report the first molecular dynamics simulation study of the interaction of the antimicrobial peptide, polymyxin B1 with complex models of both the inner and outer membranes of E. coli. The results of >16 microseconds of simulation predict that polymyxin B1 is likely to interact with the membranes via distinct mechanisms. The lipopeptides aggregate in the lipopolysaccharide headgroup region of the outer membrane with limited tendency for insertion within the lipid A tails. In contrast, the lipopeptides readily insert into the inner membrane core, and the concomitant increased hydration may be responsible for bilayer destabilization and antimicrobial function. Given the urgent need to develop novel, potent antibiotics, the results presented here reveal key mechanistic details that may be exploited for future rational drug development.

Indexed as

Cell MembraneComputational BiologyEscherichia coliLipopolysaccharidesMolecular Dynamics SimulationPolymyxinsLipopolysaccharidespolymyxin B(1)Polymyxins

Identifiers

PMID25885324
PMCPMC4401565
OpenAlexW2043528043

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.