Evidence map›Paper›PMID 31881208›Full record

ArticleJournal of molecular biology2020

Binding and Transport of Carboxylated Drugs by the Multidrug Transporter AcrB.

Heng-Keat Tam, Viveka N Malviya, Wuen-Ee Foong, Andrea Herrmann, Giuliano Malloci, Paolo Ruggerone, Attilio V Vargiu, Klaas M Pos

Open access · greenAbstract read
In one paragraph

Article in Journal of molecular biology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed
3.0field-weighted citation impact, top 7% 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

40 citing papers in PubMed, 55 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Mechanisms of fusidic acid resistance.Biochemical Society transactions · 2025
    Review
  7. Efflux-Mediated Resistance inAntibiotics (Basel, Switzerland) · 2025
    Review
  8. JAC-antimicrobial resistance · 2025
    Article
  9. Article
  10. Article
  11. Article
  12. Review
  13. Review
  14. Article
  15. Article
  16. Review
  17. Article
  18. Review
  19. Review
  20. Review
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

8 authors at 2 institutions in 2 countries.

Heng-Keat TamInstitute of Biochemistry, Goethe University Frankfurt, Max-von-Laue-Str. 9, D-60438 Frankfurt Am Main, Germany.
Viveka N MalviyaInstitute of Biochemistry, Goethe University Frankfurt, Max-von-Laue-Str. 9, D-60438 Frankfurt Am Main, Germany.
Wuen-Ee FoongInstitute of Biochemistry, Goethe University Frankfurt, Max-von-Laue-Str. 9, D-60438 Frankfurt Am Main, Germany.
Andrea HerrmannInstitute of Biochemistry, Goethe University Frankfurt, Max-von-Laue-Str. 9, D-60438 Frankfurt Am Main, Germany.
Giuliano MallociDepartment of Physics, University of Cagliari, S.P. 8 Km 0.700, 09042 Monserrato (CA), Italy.
Paolo RuggeroneDepartment of Physics, University of Cagliari, S.P. 8 Km 0.700, 09042 Monserrato (CA), Italy.
Attilio V VargiuDepartment of Physics, University of Cagliari, S.P. 8 Km 0.700, 09042 Monserrato (CA), Italy. Electronic address: vargiu@dsf.unica.it.
Klaas M PosInstitute of Biochemistry, Goethe University Frankfurt, Max-von-Laue-Str. 9, D-60438 Frankfurt Am Main, Germany. Electronic address: pos@em.uni-frankfurt.de.
Goethe University Frankfurt · DEUniversity of Cagliari · IT

Funding

Optimization of efflux avoidance and inhibition for antibiotic developmentR01AI136799 · NIAID · UNIVERSITY OF OKLAHOMA · PI GNANAKARAN, SANDRASEGARAM, RUGGERONE, PAOLO · 2018 to 2022
$5.7M
NIAID NIH HHS R01 AI136799
6 · The paper itself

Abstract

AcrAB(Z)-TolC is the main drug efflux transporter complex in Escherichia coli. The extrusion of various toxic compounds depends on several drug binding sites within the trimeric AcrB transporter. Membrane-localized carboxylated substrates, such as fusidic acid and hydrophobic β-lactams, access the pump via a groove between the transmembrane helices TM1 and TM2. In this article, the transport route from the initial TM1/TM2 groove binding site toward the deep binding pocket located in the periplasmic part has been addressed via molecular modeling studies followed by functional and structural characterization of several AcrB variants. We propose that membrane-embedded drugs bind initially to the TM1/TM2 groove, are oriented by the AcrB PN2 subdomain, and are subsequently transported via a PN2/PC1 interface pathway directly toward the deep binding pocket. Our work emphasizes the exploitation of multiple transport pathways by AcrB tuned to substrate physicochemical properties related to the polyspecificity of the pump.

Indexed as

ATP-Binding Cassette, Sub-Family C ProteinsBinding SitesChromatography, GelEscherichia coliEscherichia coli ProteinsMicrobial Sensitivity TestsModels, TheoreticalMolecular Dynamics SimulationProtein ConformationAcrB protein, E coliATP-Binding Cassette, Sub-Family C ProteinsEscherichia coli Proteinscrystallographydrug transporteffluxmembrane proteinmolecular modeling

Identifiers

PMID31881208
PMCPMC7071731
OpenAlexW2998240920

What OpenQuestion holds

Textmetadata
LicenceTDM
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.