Evidence map›Paper›PMID 30668907›Full record

ArticleACS chemical biology2019

N-Acyl l-Homocysteine Thiolactones Are Potent and Stable Synthetic Modulators of the RhlR Quorum Sensing Receptor in Pseudomonas aeruginosa.

Michelle E Boursier, Joshua B Combs, Helen E Blackwell

Erratum issuedOpen access · greenAbstract readLetter
In one paragraph

Article in ACS chemical biology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. 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, 36 citations in OpenAlex.

  1. Article
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  4. Article
  5. Short Synthesis of Structurally DiverseInternational journal of molecular sciences · 2025
    Article
  6. Article
  7. Article
  8. Article
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  10. Article
  11. Article
  12. Article
  13. Article
  14. The Molecular Architecture ofMarine drugs · 2022
    Review
  15. Article
  16. Recent Advance in Small Molecules Targeting RhlR ofAntibiotics (Basel, Switzerland) · 2022
    Review
  17. Heterocyclic Chemistry Applied to the Design ofMolecules (Basel, Switzerland) · 2021
    Review
  18. Bacterial Quorum Sensing Signals Promote Large-Scale Remodeling of Lipid Membranes.Langmuir : the ACS journal of surfaces and colloids · 2021
    Article
  19. Chemical Control of Quorum Sensing inACS infectious diseases · 2020
    Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

3 authors at 1 institution in 1 country.

Michelle E BoursierDepartment of Chemistry , University of Wisconsin-Madison , 1101 University Avenue , Madison , Wisconsin 53706 , United States.
Joshua B CombsDepartment of Chemistry , University of Wisconsin-Madison , 1101 University Avenue , Madison , Wisconsin 53706 , United States.
Helen E BlackwellDepartment of Chemistry , University of Wisconsin-Madison , 1101 University Avenue , Madison , Wisconsin 53706 , United States.ORCID 0000-0003-4261-8194
University of Wisconsin–Madison · US

Funding

Synthetic Ligands for Modulating Bacterial CommunicationR01GM109403 · NIGMS · UNIVERSITY OF WISCONSIN-MADISON · PI BLACKWELL, HELEN E. · 2014 to 2017
$1.2M
NIGMS NIH HHS R01 GM109403
6 · The paper itself

Abstract

The RhlR quorum sensing (QS) receptor in the pathogen Pseudomonas aeruginosa plays a prominent role in infection, and both antagonism and agonism of RhlR have been shown to negatively regulate important virulence phenotypes. Non-native lactone ligands are known to modulate RhlR activity, but their utility as chemical probes is relatively limited due to hydrolytic instability. Herein, we report our design and biological evaluation of a suite of hybrid AHL analogs with structures merging (1) features of reported lead RhlR ligands and (2) head groups with improved hydrolytic stabilities. The most promising compounds identified were N-acyl l-homocysteine thiolactones, which displayed enhanced stabilities relative to lactones. Moreover, they were highly selective for RhlR over another key QS receptor in P. aeruginosa, LasR. These compounds are among the most potent RhlR modulators known and represent robust chemical tools to dissect the complex roles of RhlR in the P. aeruginosa QS circuitry.

Indexed as

Bacterial ProteinsDose-Response Relationship, DrugHomocysteinePseudomonas aeruginosaQuorum SensingBacterial ProteinsHomocysteinehomocysteine thiolactone

Identifiers

PMID30668907
PMCPMC6402343
OpenAlexW2914916885

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.