Evidence map›Paper›PMID 25669133›Full record

ArticleScientific reports2015

Phenazine virulence factor binding to extracellular DNA is important for Pseudomonas aeruginosa biofilm formation.

Theerthankar Das, Samuel K Kutty, Roya Tavallaie, Amaye I Ibugo, Janjira Panchompoo, Shama Sehar, Leigh Aldous, Amanda W S Yeung, Shane R Thomas, Naresh Kumar and 2 more

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 92 papers.

0numbers the graph read from it
0cells of the map it votes in
92citing papers in PubMed
6.0field-weighted citation impact, top 3% 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

92 citing papers in PubMed, 167 citations in OpenAlex.

  1. Article
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  7. Molecular Mechanisms Underlying the Pathogenicity ofMedicina (Kaunas, Lithuania) · 2026
    Review
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  11. Genomic insights into drug resistance and virulence determinants in rare pyomelanin-producing clinical isolates of Acinetobacter baumannii.European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology · 2025
    Article
  12. Quercetin Exhibits Broad-Spectrum Antibiofilm and Antiquorum Sensing Activities Against Gram-Negative Bacteria: In Vitro and In Silico Investigation Targeting Antimicrobial Therapy.The Canadian journal of infectious diseases & medical microbiology = Journal canadien des maladies infectieuses et de la microbiologie medicale · 2025
    Article
  13. Review
  14. Frontiers in microbiology · 2025
    Article
  15. Article
  16. The adaptability ofFrontiers in cellular and infection microbiology · 2025
    Review
  17. Article
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  19. Article
  20. Article

32 more citing papers are in PubMed but not listed here.

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

12 authors at 1 institution in 1 country.

Theerthankar DasSchool of Biotechnology and Biomolecular Sciences, University of New South Wales (UNSW), Sydney 2052, Australia.
Samuel K KuttySchool of Chemistry, University of New South Wales (UNSW), Sydney 2052, Australia.
Roya TavallaieSchool of Chemistry, University of New South Wales (UNSW), Sydney 2052, Australia.
Amaye I IbugoSchool of Biotechnology and Biomolecular Sciences, University of New South Wales (UNSW), Sydney 2052, Australia.
Janjira PanchompooSchool of Chemistry, University of New South Wales (UNSW), Sydney 2052, Australia.
Shama SeharSchool of Biotechnology and Biomolecular Sciences, University of New South Wales (UNSW), Sydney 2052, Australia.
Leigh AldousSchool of Chemistry, University of New South Wales (UNSW), Sydney 2052, Australia.
Amanda W S YeungCentre for Vascular Research and School of Medical Sciences, University of New South Wales (UNSW), Sydney 2052, Australia.
Shane R ThomasCentre for Vascular Research and School of Medical Sciences, University of New South Wales (UNSW), Sydney 2052, Australia.
Naresh KumarSchool of Chemistry, University of New South Wales (UNSW), Sydney 2052, Australia.
J Justin GoodingSchool of Chemistry, University of New South Wales (UNSW), Sydney 2052, Australia.
Mike ManefieldSchool of Biotechnology and Biomolecular Sciences, University of New South Wales (UNSW), Sydney 2052, Australia.
UNSW Sydney · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Bacterial resistance to conventional antibiotics necessitates the identification of novel leads for infection control. Interference with extracellular phenomena, such as quorum sensing, extracellular DNA integrity and redox active metabolite release, represents a new frontier to control human pathogens such as Pseudomonas aeruginosa and hence reduce mortality. Here we reveal that the extracellular redox active virulence factor pyocyanin produced by P. aeruginosa binds directly to the deoxyribose-phosphate backbone of DNA and intercalates with DNA nitrogenous base pair regions. Binding results in local perturbations of the DNA double helix structure and enhanced electron transfer along the nucleic acid polymer. Pyocyanin binding to DNA also increases DNA solution viscosity. In contrast, antioxidants interacting with DNA and pyocyanin decrease DNA solution viscosity. Biofilms deficient in pyocyanin production and biofilms lacking extracellular DNA show similar architecture indicating the interaction is important in P. aeruginosa biofilm formation.

Indexed as

BiofilmsAntioxidantsDeoxyribonuclease IDNAElectron TransportExtracellular SpaceOxidation-ReductionPhenazinesProtein BindingPseudomonas aeruginosaPyocyanineThermodynamicsVirulence FactorsViscosityAntioxidantsDeoxyribonuclease IDNAPhenazinesPyocyanineVirulence Factors

Identifiers

PMID25669133
PMCPMC4323658
OpenAlexW1964551504

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.