Evidence map›Paper›PMID 15489442›Full record

ArticleJournal of bacteriology2004

The BfeR regulator mediates enterobactin-inducible expression of Bordetella enterobactin utilization genes.

Mark T Anderson, Sandra K Armstrong

Open access · greenAbstract read
In one paragraph

Article in Journal of bacteriology, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
2.2field-weighted citation impact, top 13% 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

21 citing papers in PubMed, 42 citations in OpenAlex.

  1. Non-classical roles of bacterial siderophores in pathogenesis.Frontiers in cellular and infection microbiology · 2024
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  13. Temporal signaling and differential expression of Bordetella iron transport systems: the role of ferrimones and positive regulators.Biometals : an international journal on the role of metal ions in biology, biochemistry, and medicine · 2009
    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

2 authors at 1 institution in 1 country.

Mark T AndersonDepartment of Microbiology, University of Minnesota, MMC 196, 420 Delaware Street S.E., Minneapolis, MN 55455-0312, USA.
Sandra K Armstrong
University of Minnesota Medical Center · US

Funding

IRON ACQUISITION IN BORDETELLA PERTUSSISR01AI031088 · NIAID · UNIVERSITY OF MINNESOTA TWIN CITIES · PI ARMSTRONG, SANDRA KAY · 1998 to 2014
$3.2M
MOLECULAR MECHANISMS OF INFECTIOUS DISEASE TRAININGT32AI007421 · NIAID · UNIVERSITY OF MINNESOTA TWIN CITIES · PI HAASE, ASHLEY T. · 1995 to 2004
$1.2M
Iron acquistion in Bordetella pertussisR21AI031088 · NIAID · UNIVERSITY OF MINNESOTA TWIN CITIES · PI ARMSTRONG, SANDRA KAY · 2003 to 2003
$221k
IRON ACQUISITION IN BORDETELLA PERTUSSISR29AI031088 · NIAID · EAST CAROLINA UNIVERSITY · PI ARMSTRONG, SANDRA KAY · 1991 to 1995
–
NIAID NIH HHS AI 31088NIAID NIH HHS R01 AI031088NIAID NIH HHS R21 AI031088NIAID NIH HHS T32 AI007421NIAID NIH HHS T32 AI 07421
6 · The paper itself

Abstract

Utilization of the enterobactin siderophore by the respiratory pathogens Bordetella pertussis and Bordetella bronchiseptica is dependent on the BfeA outer membrane receptor. This study determined that production of BfeA was increased significantly in iron-starved bacteria upon supplementation of cultures with enterobactin. A 1.01-kb open reading frame, designated bfeR, encoding a predicted positive transcriptional regulator of the AraC family was identified upstream and divergently oriented from bfeA. In iron-depleted cultures containing enterobactin, a Bordetella bfeR mutant exhibited markedly decreased BfeA receptor production compared to that of the wild-type strain. Additionally, B. pertussis and B. bronchiseptica bfeR mutants exhibited impaired growth with ferric enterobactin as the sole source of iron, demonstrating that effective enterobactin utilization is bfeR dependent. Transcriptional analysis using bfeA-lacZ reporter fusions in wild-type strains demonstrated that bfeA transcription was stimulated in iron-depleted conditions in the presence of enterobactin, compared to modest expression levels in cultures lacking enterobactin. In contrast, bfeA transcription in B. pertussis and B. bronchiseptica bfeR mutants was completely unresponsive to the enterobactin inducer. bfeA transcriptional analyses of a bfeA mutant demonstrated that induction by enterobactin did not require BfeA receptor-mediated uptake of the siderophore. These studies establish that bfeR encodes an enterobactin-dependent positive regulator of bfeA transcription in these Bordetella species.

Indexed as

Gene Expression Regulation, BacterialAmino Acid SequenceBacterial Outer Membrane ProteinsBordetella bronchisepticaBordetella pertussisCarrier ProteinsEnterobactinHydrolasesIronMolecular Sequence DataReceptors, Cell SurfaceBacterial Outer Membrane ProteinsCarrier ProteinsEnterobactinenterobactin receptorHydrolasesIronReceptors, Cell Surfacesiderophore receptors

Identifiers

PMID15489442
PMCPMC523226
OpenAlexW2107763737

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.