Evidence map›Paper›PMID 30069925›Full record

ArticleMolecular microbiology2018

In silico discovery of small molecules that inhibit RfaH recruitment to RNA polymerase.

Dmitri Svetlov, Da Shi, Joy Twentyman, Yuri Nedialkov, David A Rosen, Ruben Abagyan, Irina Artsimovitch

Abstract 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 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
–field-weighted citation impact
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

13 citing papers in PubMed.

  1. Review
  2. Article
  3. Article
  4. Article
  5. Evaluation of Antimicrobial Activities against VariousMolecules (Basel, Switzerland) · 2023
    Article
  6. Article
  7. Review
  8. Virulence Factors in HypervirulentFrontiers in microbiology · 2021
    Review
  9. Article
  10. Article
  11. Review
  12. Article
  13. 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

7 authors.

Dmitri SvetlovDepartment of Chemistry and Biochemistry, The Ohio State University, Columbus, OH, 43210, USA.
Da ShiDepartment of Chemistry and Biochemistry and Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, CA, 92093, USA.
Joy TwentymanDepartment of Pediatrics, Division of Pediatric Infectious Diseases, Washington University School of Medicine, St. Louis, MO, 63110, USA.
Yuri NedialkovDepartment of Microbiology and The Center for RNA Biology, The Ohio State University, Columbus, OH, 43210, USA.
David A RosenDepartment of Pediatrics, Division of Pediatric Infectious Diseases, Washington University School of Medicine, St. Louis, MO, 63110, USA.ORCID 0000-0003-1081-772X
Ruben AbagyanDepartment of Chemistry and Biochemistry and Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, CA, 92093, USA.
Irina ArtsimovitchDepartment of Microbiology and The Center for RNA Biology, The Ohio State University, Columbus, OH, 43210, USA.ORCID 0000-0002-8604-0980

Funding

Mechnanism of transcript elongation control by RfaHR01GM067153 · NIGMS · OHIO STATE UNIVERSITY · PI IRINA ARTSIMOVITCH · 2003 to 2026
$8.0M
VIRULENCE REGULATION AND PROTECTIVE IMMUNITY IN KLEBSIELLA PNEUMONIAK08AI127714 · NIAID · WASHINGTON UNIVERSITY · PI ROSEN, DAVID A. · 2017 to 2020
$703k
NIAID NIH HHS K08 AI127714NIGMS NIH HHS R01 GM067153
6 · The paper itself

Abstract

RfaH is required for virulence in several Gram-negative pathogens including Escherichia coli and Klebsiella pneumoniae. Through direct interactions with RNA polymerase (RNAP) and ribosome, RfaH activates the expression of capsule, cell wall and pilus biosynthesis operons by reducing transcription termination and activating translation. While E. coli RfaH has been extensively studied using structural and biochemical approaches, limited data are available for other RfaH homologs. Here we set out to identify small molecule inhibitors of E. coli and K. pneumoniae RfaHs. Results of biochemical and functional assays show that these proteins act similarly, with a notable difference between their interactions with the RNAP β subunit gate loop. We focused on high-affinity RfaH interactions with the RNAP β' subunit clamp helices as a shared target for inhibition. Among the top 10 leads identified by in silico docking using ZINC database, 3 ligands were able to inhibit E. coli RfaH recruitment in vitro. The most potent lead was active against both E. coli and K. pneumoniae RfaHs in vitro. Our results demonstrate the feasibility of identifying RfaH inhibitors using in silico docking and pave the way for rational design of antivirulence therapeutics against antibiotic-resistant pathogens.

Indexed as

Molecular Docking SimulationBacterial ProteinsDNA-Directed RNA PolymerasesDrug DesignEscherichia coliEscherichia coli ProteinsKlebsiella pneumoniaeLigandsPeptide Elongation FactorsRibosomesSmall Molecule LibrariesTrans-ActivatorsVirulenceBacterial ProteinsDNA-Directed RNA PolymerasesEscherichia coli ProteinsLigandsPeptide Elongation FactorsRfaH protein, E coliRNA polymerase beta subunitSmall Molecule LibrariesTrans-Activators

Identifiers

PMID30069925
PMCPMC6595482

What OpenQuestion holds

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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.