Evidence map›Paper›PMID 29184094›Full record

ArticleScientific reports2017

Dynamics of Intact MexAB-OprM Efflux Pump: Focusing on the MexA-OprM Interface.

Cesar A López, Timothy Travers, Klaas M Pos, Helen I Zgurskaya, S Gnanakaran

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
0.9field-weighted citation impact, top 30% 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

30 citing papers in PubMed, 40 citations in OpenAlex.

  1. High resolution cryo-EM structure of theJournal of structural biology: X · 2026
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  7. Comprehensive Genomic Analysis of UropathogenicPathogens (Basel, Switzerland) · 2024
    Article
  8. Article
  9. Article
  10. The Art of War withAntibiotics (Basel, Switzerland) · 2023
    Review
  11. Review
  12. Review
  13. Antibiotics (Basel, Switzerland) · 2023
    Article
  14. Antibacterial Effect of 16 Essential Oils and Modulation ofAntibiotics (Basel, Switzerland) · 2023
    Article
  15. Review
  16. Article
  17. Role of Efflux Pumps on Antimicrobial Resistance inInternational journal of molecular sciences · 2022
    Review
  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

5 authors at 3 institutions in 2 countries.

Cesar A LópezTheoretical Biology and Biophysics Group, Los Alamos National Laboratory, Los Alamos, New Mexico, 87545, United States.
Timothy TraversTheoretical Biology and Biophysics Group, Los Alamos National Laboratory, Los Alamos, New Mexico, 87545, United States.
Klaas M PosInstitute of Biochemistry, Goethe University, Frankfurt am Main, Germany.
Helen I ZgurskayaDepartment of Chemistry and Biochemistry, University of Oklahoma, 101 Stephenson Parkway, Norman, Oklahoma, 73019, United States.
S GnanakaranTheoretical Biology and Biophysics Group, Los Alamos National Laboratory, Los Alamos, New Mexico, 87545, United States. gnana@lanl.gov.
Los Alamos National Laboratory · USGoethe University Frankfurt · DEUniversity of Oklahoma · US

Funding

Transport across two membranes by AcrAB-TolC complexR01AI052293 · NIAID · UNIVERSITY OF OKLAHOMA NORMAN · PI ZGURSKAYA, HELEN I · 2003 to 2024
$7.7M
Transport Across Two Membranes by AcrAB-TolC ComplexR56AI052293 · NIAID · UNIVERSITY OF OKLAHOMA · PI ZGURSKAYA, HELEN I · 2008 to 2008
$360k
NIAID NIH HHS R01 AI052293NIAID NIH HHS R56 AI052293
6 · The paper itself

Abstract

Antibiotic efflux is one of the most critical mechanisms leading to bacterial multidrug resistance. Antibiotics are effluxed out of the bacterial cell by a tripartite efflux pump, a complex machinery comprised of outer membrane, periplasmic adaptor, and inner membrane protein components. Understanding the mechanism of efflux pump assembly and its dynamics could facilitate discovery of novel approaches to counteract antibiotic resistance in bacteria. We built here an intact atomistic model of the Pseudomonas aeruginosa MexAB-OprM pump in a Gram-negative membrane model that contained both inner and outer membranes separated by a periplasmic space. All-atom molecular dynamics (MD) simulations confirm that the fully assembled pump is stable in the microsecond timescale. Using a combination of all-atom and coarse-grained MD simulations and sequence covariation analysis, we characterized the interface between MexA and OprM in the context of the entire efflux pump. These analyses suggest a plausible mechanism by which OprM is activated via opening of its periplasmic aperture through a concerted interaction with MexA.

Indexed as

Molecular Dynamics SimulationProtein MultimerizationBacterial Outer Membrane ProteinsGenetic VariationMembrane Transport ProteinsModels, MolecularProtein BindingProtein ConformationStructure-Activity RelationshipBacterial Outer Membrane ProteinsMembrane Transport ProteinsMexA protein, Pseudomonas aeruginosaMexB protein, Pseudomonas aeruginosaOprM protein, Pseudomonas aeruginosa

Identifiers

PMID29184094
PMCPMC5705723
OpenAlexW2769367061

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.