Evidence map›Paper›PMID 19395489›Full record

ArticleJournal of bacteriology2009

ResDE-dependent regulation of enterotoxin gene expression in Bacillus cereus: evidence for multiple modes of binding for ResD and interaction with Fnr.

Julia Esbelin, Jean Armengaud, Assia Zigha, Catherine Duport

Open access · greenAbstract read
In one paragraph

Article in Journal of bacteriology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
1.6field-weighted citation impact, top 18% 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

22 citing papers in PubMed, 34 citations in OpenAlex.

  1. Review
  2. Virulence-related genotypic differences amongFrontiers in cellular and infection microbiology · 2023
    Article
  3. Review
  4. Review
  5. TheToxins · 2020
    Review
  6. Article
  7. Article
  8. Article
  9. Adaptation inFrontiers in microbiology · 2016
    Review
  10. Article
  11. Article
  12. Article
  13. Article
  14. Review
  15. Article
  16. Article
  17. Article
  18. Review
  19. Article
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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

4 authors at 3 institutions in 1 country.

Julia EsbelinUMR408, Sécurité et Qualité des Produits d'Origine Végétale INRA, Université d'Avignon et des Pays de Vaucluse, Avignon, France.
Jean Armengaud
Assia Zigha
Catherine Duport
Sécurité et Qualité des Produits d'Origine Végétale · FRInstitute of Environmental Biology and Biotechnology · FRUniversité d'Avignon et des Pays de Vaucluse · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In the food-borne pathogen Bacillus cereus F4430/73, the production of major virulence factors hemolysin BL (Hbl) and nonhemolytic enterotoxin (Nhe) is regulated through complex mechanisms. The two-component regulatory system ResDE is involved in the activation of hbl and nhe transcription. Here, the response regulator ResD and the sensor kinase ResE were overexpressed and purified, and autophosphorylation of ResE and transphosphorylation of ResD by ResE were demonstrated in vitro. ResD is mainly monomeric in solution, regardless of its phosphorylation state. ResD was shown to interact directly with promoter regions (p) of the enterotoxin regulator genes resDE, fnr, and plcR and the enterotoxin structural genes nhe and hbl, but with different affinities. Binding of ResD to pplcR, pnhe, and phbl was not dependent on the ResD phosphorylation status. In contrast, ResD phosphorylation significantly increased interactions between ResD and presDE and pfnr. Taken together, these results showed that phosphorylation of ResD results in a different target expression pattern. Furthermore, ResD and the redox activator Fnr were found to physically interact and simultaneously bind their target DNAs. We propose that unphosphorylated ResD acts as an antiactivator of Fnr, while phosphorylated ResD acts as a coactivator of Fnr. Finally, our findings represent the first molecular evidence of the role of ResDE as a sentinel system capable of sensing redox changes and coordinating a response that modulates B. cereus virulence.

Indexed as

Bacillus cereusBacterial ProteinsBlotting, Far-WesternBlotting, WesternCloning, MolecularElectrophoretic Mobility Shift AssayGene Expression Regulation, BacterialPhosphorylationPromoter Regions, GeneticProtein BindingProtein MultimerizationBacterial Proteins

Identifiers

PMID19395489
PMCPMC2698483
OpenAlexW1978812732

What OpenQuestion holds

Textmetadata
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.