Evidence map›Paper›PMID 30691677›Full record

ArticleBiophysical journal2019

Identification of Binding Sites for Efflux Pump Inhibitors of the AcrAB-TolC Component AcrA.

Zbigniew M Darzynkiewicz, Adam T Green, Narges Abdali, Anthony Hazel, Ronnie L Fulton, Joseph Kimball, Zygmunt Gryczynski, James C Gumbart, Jerry M Parks, Jeremy C Smith and 1 more

Open access · bronzeAbstract read
In one paragraph

Article in Biophysical journal, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
1.8field-weighted citation impact, top 15% 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

20 citing papers in PubMed, 38 citations in OpenAlex.

  1. Article
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  3. MgbioRxiv : the preprint server for biology · 2024
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  19. Discovery of multidrug efflux pump inhibitors with a novel chemical scaffold.Biochimica et biophysica acta. General subjects · 2020
    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

11 authors at 5 institutions in 1 country.

Zbigniew M DarzynkiewiczDepartment of Chemistry and Biochemistry, University of Oklahoma, Norman, Oklahoma.
Adam T GreenUT/ORNL Center for Molecular Biophysics, Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee; Graduate School of Genome Science and Technology, University of Tennessee, Knoxville, Tennessee.
Narges AbdaliDepartment of Chemistry and Biochemistry, University of Oklahoma, Norman, Oklahoma.
Anthony HazelSchool of Physics, Georgia Institute of Technology, Atlanta, Georgia.
Ronnie L FultonDepartment of Chemistry and Biochemistry, University of Oklahoma, Norman, Oklahoma.
Joseph KimballDepartment of Physics and Astronomy, Texas Christian University, Fort Worth, Texas.
Zygmunt GryczynskiDepartment of Physics and Astronomy, Texas Christian University, Fort Worth, Texas; Department of Microbiology, Immunology, and Genetics, University of North Texas Health Science Center, Fort Worth, Texas.
James C GumbartSchool of Physics, Georgia Institute of Technology, Atlanta, Georgia.
Jerry M ParksUT/ORNL Center for Molecular Biophysics, Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee; Graduate School of Genome Science and Technology, University of Tennessee, Knoxville, Tennessee.
Jeremy C SmithUT/ORNL Center for Molecular Biophysics, Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee; Graduate School of Genome Science and Technology, University of Tennessee, Knoxville, Tennessee; Department of Biochemistry and Cellular and Molecular Biology, University of Tennessee, Knoxville, Tennessee.
Helen I ZgurskayaDepartment of Chemistry and Biochemistry, University of Oklahoma, Norman, Oklahoma. Electronic address: elenaz@ou.edu.
University of Oklahoma · USOak Ridge National Laboratory · USGeorgia Institute of Technology · USTexas Christian University · USUniversity of North Texas · 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

The overexpression of multidrug efflux pumps is an important mechanism of clinical resistance in Gram-negative bacteria. Recently, four small molecules were discovered that inhibit efflux in Escherichia coli and interact with the AcrAB-TolC efflux pump component AcrA. However, the binding site(s) for these molecules was not determined. Here, we combine ensemble docking and molecular dynamics simulations with tryptophan fluorescence spectroscopy, site-directed mutagenesis, and antibiotic susceptibility assays to probe binding sites and effects of binding of these molecules. We conclude that clorobiocin and SLU-258 likely bind at a site located between the lipoyl and β-barrel domains of AcrA.

Indexed as

Anti-Bacterial AgentsBinding SitesCarrier ProteinsEscherichia coli ProteinsLipoproteinsMembrane Transport ProteinsMolecular Docking SimulationMolecular Dynamics SimulationMutationNovobiocinProtein DomainsAcrAB-TolC protein, E coliAcrA protein, E coliAnti-Bacterial AgentsCarrier ProteinsclorobiocinEscherichia coli ProteinsLipoproteinsMembrane Transport ProteinsNovobiocin

Identifiers

PMID30691677
PMCPMC6382954
OpenAlexW2911217809

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.