Evidence map›Paper›PMID 21573071›Full record

ArticlePloS one2011

Fur activates the expression of Salmonella enterica pathogenicity island 1 by directly interacting with the hilD operator in vivo and in vitro.

Laura Teixidó, Begoña Carrasco, Juan C Alonso, Jordi Barbé, Susana Campoy

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In one paragraph

Article in PloS one, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers.

0numbers the graph read from it
0cells of the map it votes in
41citing 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

41 citing papers in PubMed.

  1. Review
  2. Article
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  4. Interplay between Rho, H-NS, spurious transcription, andProceedings of the National Academy of Sciences of the United States of America · 2022
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  11. Review
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  16. Article
  17. Identification of Fur inFrontiers in veterinary science · 2019
    Article
  18. Review
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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

5 authors.

Laura TeixidóDepartament de Genètica i de Microbiologia, Facultat de Biociències. Universitat Autònoma de Barcelona, Bellaterra, Spain.
Begoña Carrasco
Juan C Alonso
Jordi Barbé
Susana Campoy

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Previous studies have established that the expression of Salmonella enterica pathogenicity island 1 (SPI1), which is essential for epithelial invasion, is mainly regulated by the HilD protein. The ferric uptake regulator, Fur, in turn modulates the expression of the S. enterica hilD gene, albeit through an unknown mechanism. Here we report that S. enterica Fur, in its metal-bound form, specifically binds to an AT-rich region (BoxA), located upstream of the hilD promoter (P(hilD)), at position -191 to -163 relative to the hilD transcription start site. Furthermore, in a P(hilD) variant with mutations in BoxA, P(hilD*), Fur·Mn(2+) binding is impaired. In vivo experiments using S. enterica strains carrying wild-type P(hilD) or the mutant variant P(hilD*) showed that Fur activates hilD expression, while in vitro experiments revealed that the Fur·Mn(2+) protein is sufficient to increase hilD transcription. Together, these results present the first evidence that Fur·Mn(2+), by binding to the upstream BoxA sequence, directly stimulates the expression of hilD in S. enterica.

Indexed as

Gene Expression Regulation, BacterialBacterial ProteinsBase SequenceDNA, BacterialDNA FootprintingGenomic IslandsIronManganeseModels, BiologicalMolecular Sequence DataMutationOperator Regions, GeneticProtein BindingRNA, MessengerSalmonella entericaTranscription, GeneticBacterial ProteinsDNA, BacterialIronManganeseRNA, Messenger

Identifiers

PMID21573071
PMCPMC3089636

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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.