Evidence map›Paper›PMID 24097951›Full record

ArticleJournal of bacteriology2013

Identification and characterization of novel Helicobacter pylori apo-fur-regulated target genes.

Beth M Carpenter, Jeremy J Gilbreath, Oscar Q Pich, Ann M McKelvey, Ernest L Maynard, Zhao-Zhang Li, D Scott Merrell

Open access · bronzeAbstract read
In one paragraph

Article in Journal of bacteriology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
4.9field-weighted citation impact, top 5% 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

23 citing papers in PubMed, 42 citations in OpenAlex.

  1. Review
  2. Article
  3. A Positively SelectedInfection and immunity · 2023
    Article
  4. Article
  5. Insights into the Orchestration of Gene Transcription Regulators inInternational journal of molecular sciences · 2022
    Review
  6. Article
  7. Review
  8. Article
  9. Review
  10. Bacterial iron detoxification at the molecular level.The Journal of biological chemistry · 2020
    Review
  11. Review
  12. Article
  13. Article
  14. Article
  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

7 authors at 1 institution in 1 country.

Beth M CarpenterDepartment of Microbiology and Immunology, Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA.
Jeremy J Gilbreath
Oscar Q Pich
Ann M McKelvey
Ernest L Maynard
Zhao-Zhang Li
D Scott Merrell
Uniformed Services University of the Health Sciences · US

Funding

Regulatory Networks of Helicobacter pyloriR01AI065529 · NIAID · HENRY M. JACKSON FDN FOR THE ADV MIL/MED · PI MERRELL, D. SCOTT · 2007 to 2011
$1.9M
Regulatory Mechanisms of Helicobacter pyloriR56AI065529 · NIAID · HENRY M. JACKSON FDN FOR THE ADV MIL/MED · PI MERRELL, D. SCOTT · 2013 to 2013
$357k
NIAID NIH HHS AI065529NIAID NIH HHS R01 AI065529NIAID NIH HHS R56 AI065529
6 · The paper itself

Abstract

In Helicobacter pylori, the ferric uptake regulator (Fur) has evolved additional regulatory functions not seen in other bacteria; it can repress and activate different groups of genes in both its iron-bound and apo forms. Because little is understood about the process of apo-Fur repression and because only two apo-Fur-repressed genes (pfr and sodB) have previously been identified, we sought to expand our understanding of this type of regulation. Utilizing published genomic studies, we selected three potential new apo-Fur-regulated gene targets: serB, hydA, and the cytochrome c553 gene. Transcriptional analyses confirmed Fur-dependent repression of these genes in the absence of iron, as well as derepression in the absence of Fur. Binding studies showed that apo-Fur directly interacted with the suspected hydA and cytochrome c553 promoters but not that of serB, which was subsequently shown to be cotranscribed with pfr; apo-Fur-dependent regulation occurred at the pfr promoter. Alignments of apo-regulated promoter regions revealed a conserved, 6-bp consensus sequence (AAATGA). DNase I footprinting showed that this sequence lies within the protected regions of the pfr and hydA promoters. Moreover, mutation of the sequence in the pfr promoter abrogated Fur binding and DNase protection. Likewise, fluorescence anisotropy studies and binding studies with mutated consensus sequences showed that the sequence was important for apo-Fur binding to the pfr promoter. Together these studies expand the known apo-Fur regulon in H. pylori and characterize the first reported apo-Fur box sequence.

Indexed as

Gene Expression Regulation, BacterialTranscription, GeneticBacterial ProteinsBinding SitesDNA, BacterialDNA FootprintingDNA Mutational AnalysisDown-RegulationHelicobacter pyloriPromoter Regions, GeneticProtein BindingRepressor ProteinsBacterial ProteinsDNA, Bacterialferric uptake regulating proteins, bacterialRepressor Proteins

Identifiers

PMID24097951
PMCPMC3889615
OpenAlexW2004537361

What OpenQuestion holds

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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.