Evidence map›Paper›PMID 17513472›Full record

ArticleJournal of bacteriology2007

Type IV fimbrial biogenesis is required for protease secretion and natural transformation in Dichelobacter nodosus.

Xiaoyan Han, Ruth M Kennan, Dane Parker, John K Davies, Julian I Rood

Open access · greenAbstract read
In one paragraph

Article in Journal of bacteriology, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed
1.2field-weighted citation impact, top 22% 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

36 citing papers in PubMed, 63 citations in OpenAlex.

  1. Molecular typing ofIranian journal of veterinary research · 2025
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  4. Mechanism of secretion of TcpF by theProceedings of the National Academy of Sciences of the United States of America · 2023
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  9. Bacterial secretins: Mechanisms of assembly and membrane targeting.Protein science : a publication of the Protein Society · 2020
    Review
  10. Article
  11. Article
  12. Review
  13. Lectins ofBeilstein journal of organic chemistry · 2019
    Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Review
  19. Editorial.FEMS microbiology reviews · 2015
    Article
  20. 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

5 authors at 2 institutions in 1 country.

Xiaoyan HanAustralian Research Council Centre of Excellence in Structural and Functional Microbial Genomics, Department of Microbiology, Monash University, Victoria 3800, Australia.
Ruth M Kennan
Dane Parker
John K Davies
Julian I Rood
Australian Research Council · AUMonash University · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The objective of this study was to develop an understanding of the molecular mechanisms by which type IV fimbrial biogenesis, natural transformation, and protease secretion are linked in the ovine foot rot pathogen, Dichelobacter nodosus. We have shown that like the D. nodosus fimbrial subunit FimA, the pilin-like protein PilE and the FimN, FimO, and FimP proteins, which are homologs of PilB, PilC, and PilD from Pseudomonas aeruginosa, are essential for fimbrial biogenesis and natural transformation, indicating that transformation requires an intact type IV fimbrial apparatus. The results also showed that extracellular protease secretion in the fimN, fimO, fimP, and pilE mutants was significantly reduced, which represents the first time that PilB, PilC, and PilE homologs have been shown to be required for the secretion of unrelated extracellular proteins in a type IV fimbriate bacterium. Quantitative real-time PCR analysis of the three extracellular protease genes aprV2, aprV5, and bprV showed that the effects on protease secretion were not mediated at the transcriptional level. Bioinformatic analysis did not identify a classical type II secretion system, and the putative fimbrial biogenesis gene pilQ was the only outer membrane secretin gene identified. Based on these results, it is postulated that in D. nodosus, protease secretion occurs by a type II secretion-related process that directly involves components of the type IV fimbrial biogenesis machinery, which represents the only type II secretion system encoded by the small genome of this highly evolved pathogen.

Indexed as

Amino Acid SequenceAnimalsDichelobacter nodosusElectrophoresis, Gel, Two-DimensionalElectrophoresis, Polyacrylamide GelFimbriae, BacterialFimbriae ProteinsGene OrderGenes, BacterialImmunoblottingMicroscopy, Electron, TransmissionMolecular Sequence DataMultigene FamilyMutationPeptide HydrolasesSequence Homology, Amino AcidFimbriae ProteinsPeptide HydrolasespilQ protein, bacteria

Identifiers

PMID17513472
PMCPMC1951885
OpenAlexW2172166492

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.