Evidence map›Paper›PMID 29437248›Full record

ArticleMolecular microbiology2018

Mechanism of agonism and antagonism of the Pseudomonas aeruginosa quorum sensing regulator QscR with non-native ligands.

Christina L Wysoczynski-Horita, Michelle E Boursier, Ryan Hill, Kirk Hansen, Helen E Blackwell, Mair E A Churchill

Open access · greenAbstract read
In one paragraph

Article in Molecular microbiology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
1.7field-weighted citation impact, top 16% 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

26 citing papers in PubMed, 45 citations in OpenAlex.

  1. MrtR ofProceedings of the National Academy of Sciences of the United States of America · 2026
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  5. Silyl-Lipid FunctionalizedACS chemical biology · 2025
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  7. Busulfan inhibitsFrontiers in cellular and infection microbiology · 2025
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  12. Inhibition and eradication ofRSC medicinal chemistry · 2023
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  13. Article
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  15. Review
  16. Article
  17. Review
  18. Article
  19. Article
  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

6 authors at 2 institutions in 1 country.

Christina L Wysoczynski-HoritaDepartment of Pharmacology and Program in Structural Biology and Biochemistry, University of Colorado School of Medicine, Aurora, CO 80045, USA.
Michelle E BoursierDepartment of Chemistry, University of Wisconsin, Madison, WI 53706, USA.
Ryan HillDepartment of Immunology and Microbiology, University of Colorado School of Medicine, Aurora, CO 80045, USA.
Kirk HansenDepartment of Immunology and Microbiology, University of Colorado School of Medicine, Aurora, CO 80045, USA.
Helen E BlackwellDepartment of Chemistry, University of Wisconsin, Madison, WI 53706, USA.
Mair E A ChurchillDepartment of Pharmacology and Program in Structural Biology and Biochemistry, University of Colorado School of Medicine, Aurora, CO 80045, USA.ORCID 0000-0003-0862-235X
University of Colorado Denver · USUniversity of Wisconsin–Madison · US

Funding

University of Colorado Cancer Center Support Grant - Lung Cancer Patient-Derived Xenografts with Autologous Human Immune SystemsP30CA046934 · NCI · UNIVERSITY OF COLORADO DENVER · PI James V Degregori · 1988 to 2026
$117.0M
Colorado Clinical and Translational Sciences InstituteUL1TR001082 · NCATS · UNIVERSITY OF COLORADO DENVER · PI SOKOL, RONALD J. · 2013 to 2017
$48.0M
Synthetic Ligands for Modulating Bacterial CommunicationR01GM109403 · NIGMS · UNIVERSITY OF WISCONSIN-MADISON · PI BLACKWELL, HELEN E. · 2014 to 2017
$1.2M
Quantum 315 r DetectorS10OD012073 · OD · MOLECULAR BIOLOGY CONSORTIUM · PI NIX, JAY C. · 2012 to 2012
$600k
Macromolecular X-ray Data Collection InstrumentationS10OD012033 · OD · UNIVERSITY OF COLORADO DENVER · PI CHURCHILL, MAIR E · 2014 to 2014
$421k
Molecular Basis of Bacterial Quorum Sensing Gene RegulationR56AI081872 · NIAID · UNIVERSITY OF COLORADO DENVER · PI CHURCHILL, MAIR E · 2010 to 2010
$404k
NCATS NIH HHS UL1 TR001082NCI NIH HHS P30 CA046934NIAID NIH HHS R56 AI081872NIGMS NIH HHS R01 GM109403NIH HHS S10 OD012033NIH HHS S10 OD012073
6 · The paper itself

Abstract

Pseudomonas aeruginosa is an opportunistic pathogen that uses the process of quorum sensing (QS) to coordinate the expression of many virulence genes. During quorum sensing, N-acyl-homoserine lactone (AHL) signaling molecules regulate the activity of three LuxR-type transcription factors, LasR, RhlR and QscR. To better understand P. aeruginosa QS signal reception, we examined the mechanism underlying the response of QscR to synthetic agonists and antagonists using biophysical and structural approaches. The structure of QscR bound to a synthetic agonist reveals a novel mode of ligand binding supporting a general mechanism for agonist activity. In turn, antagonists of QscR with partial agonist activity were found to destabilize and greatly impair QscR dimerization and DNA binding. These results highlight the diversity of LuxR-type receptor responses to small molecule agonists and antagonists and demonstrate the potential for chemical strategies for the selective targeting of individual QS systems.

Indexed as

Bacterial ProteinsLigandsProtein BindingPseudomonas aeruginosaQuorum SensingRepressor ProteinsSignal TransductionTrans-ActivatorsTranscription FactorsVirulenceBacterial ProteinsLigandsQscR protein, Pseudomonas aeruginosaRepressor ProteinsTrans-ActivatorsTranscription Factors

Identifiers

PMID29437248
PMCPMC5914528
OpenAlexW2790465394

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.