Evidence map›Paper›PMID 29237285›Full record

ArticleAntioxidants & redox signaling2018

Inhibition of Diverse DsbA Enzymes in Multi-DsbA Encoding Pathogens.

Makrina Totsika, Dimitrios Vagenas, Jason J Paxman, Geqing Wang, Rabeb Dhouib, Pooja Sharma, Jennifer L Martin, Martin J Scanlon, Begoña Heras

Abstract read
In one paragraph

Article in Antioxidants & redox signaling, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 1 pooled it
–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

26 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Drug-resistantClinical microbiology reviews · 2025
    Pooled it
  2. Repurposing loratadine to reverse colistin resistance inEmerging microbes & infections · 2026
    Article
  3. Article
  4. Article
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  6. Review
  7. Article
  8. Article
  9. Article
  10. A Buried Water Network Modulates the Activity of theAntioxidants (Basel, Switzerland) · 2023
    Article
  11. Article
  12. Exploring the inhibitory potential ofFrontiers in molecular biosciences · 2023
    Article
  13. Article
  14. Article
  15. Article
  16. Interplay between DsbA1, DsbA2 and C8J_1298 Periplasmic Oxidoreductases ofInternational journal of molecular sciences · 2021
    Article
  17. Article
  18. Anti-Virulence Therapeutic Approaches forAntibiotics (Basel, Switzerland) · 2021
    Review
  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

9 authors.

Makrina Totsika1 Institute of Health and Biomedical Innovation, School of Biomedical Sciences, Queensland University of Technology , Queensland, Australia .
Dimitrios Vagenas1 Institute of Health and Biomedical Innovation, School of Biomedical Sciences, Queensland University of Technology , Queensland, Australia .
Jason J Paxman2 Department of Biochemistry and Genetics, La Trobe Institute for Molecular Science, La Trobe University , Bundoora, Australia .
Geqing Wang2 Department of Biochemistry and Genetics, La Trobe Institute for Molecular Science, La Trobe University , Bundoora, Australia .
Rabeb Dhouib1 Institute of Health and Biomedical Innovation, School of Biomedical Sciences, Queensland University of Technology , Queensland, Australia .
Pooja Sharma3 Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Monash University , Parkville, Australia .
Jennifer L Martin4 Institute for Molecular Bioscience, University of Queensland , Queensland, Australia .
Martin J Scanlon3 Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Monash University , Parkville, Australia .
Begoña Heras2 Department of Biochemistry and Genetics, La Trobe Institute for Molecular Science, La Trobe University , Bundoora, Australia .

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimsDsbA catalyzes disulfide bond formation in secreted and outer membrane proteins in bacteria. In pathogens, DsbA is a major facilitator of virulence constituting a target for antivirulence antimicrobial development. However, many pathogens encode multiple and diverse DsbA enzymes for virulence factor folding during infection. The aim of this study was to determine whether our recently identified inhibitors of Escherichia coli K-12 DsbA can inhibit the diverse DsbA enzymes found in two important human pathogens and attenuate their virulence.

resultsDsbA inhibitors from two chemical classes (phenylthiophene and phenoxyphenyl derivatives) inhibited the virulence of uropathogenic E. coli and Salmonella enterica serovar Typhimurium, encoding two and three diverse DsbA homologues, respectively. Inhibitors blocked the virulence of dsbA null mutants complemented with structurally diverse DsbL and SrgA, suggesting that they were not selective for prototypical DsbA. Structural characterization of DsbA-inhibitor complexes showed that compounds from each class bind in a similar region of the hydrophobic groove adjacent to the Cys30-Pro31-His32-Cys33 (CPHC) active site. Modeling of DsbL- and SrgA-inhibitor interactions showed that these accessory enzymes could accommodate the inhibitors in their different hydrophobic grooves, supporting our in vivo findings. Further, we identified highly conserved residues surrounding the active site for 20 diverse bacterial DsbA enzymes, which could be exploited in developing inhibitors with a broad spectrum of activity. Innovation and Conclusion: We have developed tools to analyze the specificity of DsbA inhibitors in bacterial pathogens encoding multiple DsbA enzymes. This work demonstrates that DsbA inhibitors can be developed to target diverse homologues found in bacteria. Antioxid. Redox Signal. 29, 653-666.

Indexed as

Anti-Bacterial AgentsEnzyme InhibitorsEscherichia coli K12Escherichia coli ProteinsMicrobial Sensitivity TestsProtein Disulfide-IsomerasesThiophenesAnti-Bacterial AgentsdsbA protein, E coliEnzyme InhibitorsEscherichia coli ProteinsProtein Disulfide-IsomerasesThiophenesinfectionprotein foldingtherapeuticsthiol

Identifiers

PMID29237285
PMCPMC6067686

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Registered trials

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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.