Evidence map›Paper›PMID 28122455›Full record

ArticleJournal of the American Chemical Society2017

High-Throughput Simulations Reveal Membrane-Mediated Effects of Alcohols on MscL Gating.

Manuel N Melo, Clément Arnarez, Hendrik Sikkema, Neeraj Kumar, Martin Walko, Herman J C Berendsen, Armagan Kocer, Siewert J Marrink, Helgi I Ingólfsson

Abstract read
In one paragraph

Article in Journal of the American Chemical Society, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing 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

22 citing papers in PubMed.

  1. Article
  2. Asymmetric Nature of MscL Opening Revealed by Molecular Dynamics Simulations.Journal of chemical information and modeling · 2025
    Article
  3. Journal of chemical theory and computation · 2025
    Article
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  6. Review
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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

9 authors.

Manuel N MeloGroningen Biomolecular Science and Biotechnology Institute, University of Groningen , Nijenborgh 7, 9747 AG, Groningen, The Netherlands.
Clément ArnarezGroningen Biomolecular Science and Biotechnology Institute, University of Groningen , Nijenborgh 7, 9747 AG, Groningen, The Netherlands.
Hendrik SikkemaGroningen Biomolecular Science and Biotechnology Institute, University of Groningen , Nijenborgh 7, 9747 AG, Groningen, The Netherlands.
Neeraj KumarGroningen Institute for Evolutionary Life Sciences, University of Groningen , Nijenborgh 7, 9747 AG, Groningen, The Netherlands.
Martin WalkoGroningen Biomolecular Science and Biotechnology Institute, University of Groningen , Nijenborgh 7, 9747 AG, Groningen, The Netherlands.
Herman J C BerendsenGroningen Biomolecular Science and Biotechnology Institute, University of Groningen , Nijenborgh 7, 9747 AG, Groningen, The Netherlands.
Armagan KocerDepartment of Neuroscience, University Medical Center Groningen, University of Groningen , Antonius Deusinglaan 1, 99713 AV, Groningen, The Netherlands.
Siewert J MarrinkGroningen Biomolecular Science and Biotechnology Institute, University of Groningen , Nijenborgh 7, 9747 AG, Groningen, The Netherlands.
Helgi I IngólfssonGroningen Biomolecular Science and Biotechnology Institute, University of Groningen , Nijenborgh 7, 9747 AG, Groningen, The Netherlands.ORCID 0000-0002-7613-9143

Funding

European Research Council 208814
6 · The paper itself

Abstract

The mechanosensitive channels of large conductance (MscL) are bacterial membrane proteins that serve as last resort emergency release valves in case of severe osmotic downshock. Sensing bilayer tension, MscL channels are sensitive to changes in the bilayer environment and are, therefore, an ideal test case for exploring membrane protein coupling. Here, we use high-throughput coarse-grained molecular dynamics simulations to characterize MscL gating kinetics in different bilayer environments under the influence of alcohols. We performed over five hundred simulations to obtain sufficient statistics to reveal the subtle effects of changes in the membrane environment on MscL gating. MscL opening times were found to increase with the addition of the straight-chain alcohols ethanol, octanol, and to some extent dodecanol but not with hexadecanol. Increasing concentration of octanol increased the impeding effect, but only up to 10-20 mol %. Our in silico predictions were experimentally confirmed using reconstituted MscL in a liposomal fluorescent efflux assay. Our combined data reveal that the effect of alcohols on MscL gating arises not through specific binding sites but through a combination of the alcohol-induced changes to a number of bilayer properties and their alteration of the MscL-bilayer interface. Our work provides a key example of how extensive molecular simulations can be used to predict the functional modification of membrane proteins by subtle changes in their bilayer environment.

Indexed as

Molecular Dynamics SimulationBacterial ProteinsCell MembraneEthanolIon Channel GatingIon ChannelsMechanical PhenomenaOctanolsBacterial ProteinsEthanolIon ChannelsOctanols

Identifiers

PMID28122455
PMCPMC5343553

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.