Evidence map›Paper›PMID 23042987›Full record

ArticleJournal of bacteriology2012

AhpC is required for optimal production of enterobactin by Escherichia coli.

Li Ma, Shelley M Payne

Open access · bronzeAbstract read
In one paragraph

Article in Journal of bacteriology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
1.9field-weighted citation impact, top 14% 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

18 citing papers in PubMed, 29 citations in OpenAlex.

  1. Review
  2. Article
  3. Review
  4. Article
  5. OxyR contributes to the oxidative stress capacity and virulence of hypervirulentFrontiers in cellular and infection microbiology · 2025
    Article
  6. Frontiers in microbiology · 2024
    Review
  7. Article
  8. Article
  9. Article
  10. Complete Genome Sequence Analysis ofFrontiers in microbiology · 2017
    Article
  11. Article
  12. Article
  13. Article
  14. Muconic acid production from glucose using enterobactin precursors in Escherichia coli.Journal of industrial microbiology & biotechnology · 2015
    Article
  15. Review
  16. Article
  17. Article
  18. 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

2 authors at 1 institution in 1 country.

Li MaSection of Microbiology and Molecular Genetics and Institute for Cellular and Molecular Biology, University of Texas at Austin, Austin, Texas, USA.
Shelley M Payne
The University of Texas at Austin · US

Funding

ROLE OF CARBON METABOLISM AND VIRULENCE OF SHIGELLA FLEXNERIR37AI016935 · NIAID · UNIVERSITY OF TEXAS AUSTIN · PI Shelley M. Payne · 2003 to 2026
$6.0M
Characterization of the ferrous iron transporter Feo in Vibrio choleraeR01AI091957 · NIAID · UNIVERSITY OF TEXAS AT AUSTIN · PI PAYNE, SHELLEY M. · 2011 to 2021
$3.9M
Role of carbon metabolism in virulence of Shigella flexneriR01AI016935 · NIAID · UNIVERSITY OF TEXAS AUSTIN · PI PAYNE, SHELLEY M. · 1985 to 2017
$2.6M
NIAID NIH HHS AI091957NIAID NIH HHS AI16935NIAID NIH HHS R01 AI016935NIAID NIH HHS R01 AI091957NIAID NIH HHS R37 AI016935
6 · The paper itself

Abstract

Escherichia coli alkyl hydroperoxide reductase subunit C (AhpC) is a peroxiredoxin that detoxifies peroxides. Here we show an additional role for AhpC in cellular iron metabolism of E. coli. Deletion of ahpC resulted in reduced growth and reduced accumulation of iron by cells grown in low-iron media. Liquid chromatography-mass spectroscopy (LC-MS) analysis of culture supernatants showed that the ahpC mutant secreted much less enterobactin, the siderophore that chelates and transports ferric iron under iron-limiting conditions, than wild-type E. coli did. The ahpC mutant produced less 2,3-dihydroxybenzoate, the intermediate in the enterobactin biosynthesis pathway, and providing 2,3-dihydroxybenzoate restored wild-type growth of the ahpC mutant. These data indicated that the defect was in an early step in enterobactin biosynthesis. Providing additional copies of entC, which functions in the first dedicated step of enterobactin biosynthesis, but not of other enterobactin biosynthesis genes, suppressed the mutant phenotype. Additionally, providing either shikimate or a mixture of para-aminobenzoate, tryptophan, tyrosine, and phenylalanine, which, like enterobactin, are synthesized from the precursor chorismate, also suppressed the mutant phenotype. These data suggested that AhpC affected the activity of EntC or the availability of the chorismate substrate.

Indexed as

Chorismic AcidCulture MediaEnterobactinEscherichia coliEscherichia coli ProteinsGene DeletionHydroxybenzoatesIronpara-AminobenzoatesPeroxiredoxinsPhenylalanineShikimic AcidTryptophanTyrosine2,3-dihydroxybenzoic acidahpC protein, E coliChorismic AcidCulture MediaEnterobactinEscherichia coli ProteinsHydroxybenzoatesIronpara-AminobenzoatesPeroxiredoxinsPhenylalanineShikimic AcidTryptophanTyrosine

Identifiers

PMID23042987
PMCPMC3510565
OpenAlexW2067943237

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.