Evidence map›Paper›PMID 33149158›Full record

ArticleNature communications2020

Perturbed structural dynamics underlie inhibition and altered efflux of the multidrug resistance pump AcrB.

Eamonn Reading, Zainab Ahdash, Chiara Fais, Vito Ricci, Xuan Wang-Kan, Elizabeth Grimsey, Jack Stone, Giuliano Malloci, Andy M Lau, Heather Findlay and 6 more

Open access · goldAbstract read
In one paragraph

Article in Nature communications, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed
2.8field-weighted citation impact, top 8% 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

42 citing papers in PubMed, 57 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Frontiers in cellular and infection microbiology · 2026
    Article
  6. Review
  7. Article
  8. Article
  9. Article
  10. Efflux-Mediated Resistance inAntibiotics (Basel, Switzerland) · 2025
    Review
  11. Review
  12. Regulation, structure, and activity of theAntimicrobial agents and chemotherapy · 2025
    Review
  13. Article
  14. Article
  15. Review
  16. Article
  17. Article
  18. Review
  19. Structural analysis of resistance-nodulation cell division transporters.Microbiology and molecular biology reviews : MMBR · 2024
    Review
  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

16 authors at 4 institutions in 3 countries.

Eamonn ReadingDepartment of Chemistry, King's College London, Britannia House, 7 Trinity Street, London, SE1 1DB, UK. eamonn.reading@kcl.ac.uk.ORCID 0000-0001-8219-0052
Zainab AhdashDepartment of Chemistry, King's College London, Britannia House, 7 Trinity Street, London, SE1 1DB, UK.
Chiara FaisDepartment of Physics, University of Cagliari, Cittadella Universitaria, S.P. Monserrato-Sestu, 09042, Monserrato, (CA), Italy.
Vito RicciAntimicrobials Research Group, Institute of Microbiology and Infection, College of Medical and Dental Sciences, The University of Birmingham, Birmingham, B15 2TT, UK.
Xuan Wang-KanAntimicrobials Research Group, Institute of Microbiology and Infection, College of Medical and Dental Sciences, The University of Birmingham, Birmingham, B15 2TT, UK.ORCID 0000-0002-3052-7511
Elizabeth GrimseyAntimicrobials Research Group, Institute of Microbiology and Infection, College of Medical and Dental Sciences, The University of Birmingham, Birmingham, B15 2TT, UK.
Jack StoneAntimicrobials Research Group, Institute of Microbiology and Infection, College of Medical and Dental Sciences, The University of Birmingham, Birmingham, B15 2TT, UK.
Giuliano MallociDepartment of Physics, University of Cagliari, Cittadella Universitaria, S.P. Monserrato-Sestu, 09042, Monserrato, (CA), Italy.ORCID 0000-0002-5985-257X
Andy M LauDepartment of Chemistry, King's College London, Britannia House, 7 Trinity Street, London, SE1 1DB, UK.
Heather FindlayDepartment of Chemistry, King's College London, Britannia House, 7 Trinity Street, London, SE1 1DB, UK.
Albert KonijnenbergThermo Fisher Scientific, Zwaanstraat 31G/H, 5651 CA, Eindhoven, The Netherlands.
Paula J BoothDepartment of Chemistry, King's College London, Britannia House, 7 Trinity Street, London, SE1 1DB, UK.
Paolo RuggeroneDepartment of Physics, University of Cagliari, Cittadella Universitaria, S.P. Monserrato-Sestu, 09042, Monserrato, (CA), Italy.ORCID 0000-0003-0825-0824
Attilio V VargiuDepartment of Physics, University of Cagliari, Cittadella Universitaria, S.P. Monserrato-Sestu, 09042, Monserrato, (CA), Italy.ORCID 0000-0003-4013-8867
Laura J V PiddockAntimicrobials Research Group, Institute of Microbiology and Infection, College of Medical and Dental Sciences, The University of Birmingham, Birmingham, B15 2TT, UK.ORCID 0000-0003-1460-473X
Argyris PolitisDepartment of Chemistry, King's College London, Britannia House, 7 Trinity Street, London, SE1 1DB, UK. argyris.politis@kcl.ac.uk.ORCID 0000-0002-1617-4238
King's College London · GBUniversity of Birmingham · GBUniversity of Cagliari · ITThermo Fisher Scientific (Netherlands) · NL

Funding

Optimization of efflux avoidance and inhibition for antibiotic developmentR01AI136799 · NIAID · UNIVERSITY OF OKLAHOMA · PI GNANAKARAN, SANDRASEGARAM, RUGGERONE, PAOLO · 2018 to 2022
$5.7M
Medical Research Council MC_PC_15031Medical Research Council MR/N017846/1Medical Research Council MR/P022596/1Medical Research Council MR/S015426/1NIAID NIH HHS R01 AI136799Wellcome TrustWellcome Trust 109854/Z/15/ZWellcome Trust 214259
6 · The paper itself

Abstract

Resistance-nodulation-division efflux pumps play a key role in inherent and evolved multidrug resistance in bacteria. AcrB, a prototypical member of this protein family, extrudes a wide range of antimicrobial agents out of bacteria. Although high-resolution structures exist for AcrB, its conformational fluctuations and their putative role in function are largely unknown. Here, we determine these structural dynamics in the presence of substrates using hydrogen/deuterium exchange mass spectrometry, complemented by molecular dynamics simulations, and bacterial susceptibility studies. We show that an efflux pump inhibitor potentiates antibiotic activity by restraining drug-binding pocket dynamics, rather than preventing antibiotic binding. We also reveal that a drug-binding pocket substitution discovered within a multidrug resistant clinical isolate modifies the plasticity of the transport pathway, which could explain its altered substrate efflux. Our results provide insight into the molecular mechanism of drug export and inhibition of a major multidrug efflux pump and the directive role of its dynamics.

Indexed as

Anti-Bacterial AgentsATP-Binding Cassette, Sub-Family C ProteinsBinding SitesBiological Transport, ActiveCiprofloxacinCircular DichroismDeuteriumDipeptidesDrug Resistance, Multiple, BacterialEscherichia coliEscherichia coli ProteinsLigandsMass SpectrometryMembrane ProteinsMicrobial Sensitivity TestsMolecular Dynamics SimulationAnti-Bacterial AgentsarcB protein, E coliATP-Binding Cassette, Sub-Family C ProteinsCiprofloxacinDeuteriumDipeptidesEscherichia coli ProteinsLigandsMembrane Proteinsphenylalanine arginine beta-naphthylamideProtein Kinases

Identifiers

PMID33149158
PMCPMC7642415
OpenAlexW3094651030

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.