Evidence map›Paper›PMID 22241045›Full record

ArticleMicrobiology (Reading, England)2012

The effect of iron availability on transcription of the Neisseria meningitidis fHbp gene varies among clonal complexes.

Holly Sanders, Carina Brehony, Martin C J Maiden, Caroline Vipond, Ian M Feavers

Abstract readComparative Study
In one paragraph

Article in Microbiology (Reading, England), 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing 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

15 citing papers in PubMed.

  1. Internalization ofMicroorganisms · 2025
    Article
  2. Article
  3. Review
  4. The Host-Pathogen Interactions and Epicellular Lifestyle ofFrontiers in cellular and infection microbiology · 2022
    Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. Biological Functions of the Secretome ofFrontiers in cellular and infection microbiology · 2017
    Review
  13. Expression of factor H binding protein in meningococcal strains can vary at least 15-fold and is genetically determined.Proceedings of the National Academy of Sciences of the United States of America · 2016
    Article
  14. Review
  15. 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

5 authors.

Holly SandersNational Institute for Biological Standards and Control, Blanche Lane, Potters Bar, Hertfordshire EN6 3QG, UK.
Carina BrehonyDepartment of Zoology, University of Oxford, The Tinbergen Building, South Parks Road, Oxford OX1 3PS, UK.
Martin C J MaidenDepartment of Zoology, University of Oxford, The Tinbergen Building, South Parks Road, Oxford OX1 3PS, UK.
Caroline VipondNational Institute for Biological Standards and Control, Blanche Lane, Potters Bar, Hertfordshire EN6 3QG, UK.
Ian M FeaversNational Institute for Biological Standards and Control, Blanche Lane, Potters Bar, Hertfordshire EN6 3QG, UK.

Funding

Wellcome Trust 082102Wellcome Trust 087622Wellcome Trust 91634
6 · The paper itself

Abstract

Factor H binding protein (fHbp) is a major antigenic component of novel vaccines designed to protect against meningococcal disease. Prediction of the potential coverage of these vaccines is difficult, as fHbp is antigenically variable and levels of expression differ among isolates. Transcriptional regulation of the fHbp gene is poorly understood, although evidence suggests that oxygen availability is involved. In this study iron accessibility was found to affect fHbp transcription. However, regulation differed among meningococcal clonal complexes (ccs). For the majority of isolates, increased iron concentrations upregulated transcription. This effect was enhanced by the presence of a 181 bp insertion element upstream of fHbp, associated with isolates belonging to cc4 and cc5. Conversely, meningococci belonging to cc32 showed iron-repressed control of fHbp, as regulation was dominated by cotranscription with the iron-repressed upstream gene cbbA. These results highlight the complexity of fHbp regulation and demonstrate that control of transcription can vary among genetic lineages.

Indexed as

Transcription, GeneticAntigens, BacterialBacterial ProteinsDNA Transposable ElementsGene Expression Regulation, BacterialIronNeisseria meningitidisAntigens, BacterialBacterial ProteinsDNA Transposable Elementsfactor H-binding protein, Neisseria meningitidisIron

Identifiers

PMID22241045
PMCPMC3949423

What OpenQuestion holds

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LicenceCC BY
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.