Evidence map›Paper›PMID 15995212›Full record

ArticleJournal of bacteriology2005

Phenotypic and transcriptional characterization of the meningococcal PhoPQ system, a magnesium-sensing two-component regulatory system that controls genes involved in remodeling the meningococcal cell surface.

J Newcombe, J C Jeynes, E Mendoza, J Hinds, G L Marsden, R A Stabler, M Marti, J J McFadden

Abstract read
In one paragraph

Article in Journal of bacteriology, 2005. 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
1.7field-weighted citation impact, top 19% 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, 31 citations in OpenAlex.

  1. Article
  2. Article
  3. Inactivation ofInfection and immunity · 2017
    Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. 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

8 authors at 3 institutions in 2 countries.

J NewcombeSchool of Biomedical and Molecular Sciences, University of Surrey, Guildford, UK.
J C Jeynes
E Mendoza
J Hinds
G L Marsden
R A Stabler
M Marti
J J McFadden
St George's Hospital · GBUniversitat Autònoma de Barcelona · ESUniversity of Surrey · GB

Funding

NMR STUDIES OF BACTERIAL REGULATORY PROTEINSR01GM055769 · NIGMS · WADSWORTH CENTER · PI CAVANAGH, JOHN, MELANDER, CHRISTIAN COREY · 1998 to 2017
$3.8M
NIGMS NIH HHS GM55769NIGMS NIH HHS R01 GM055769Wellcome Trust 062511
6 · The paper itself

Abstract

We previously identified and characterized a two-component regulatory system in the meningococcus with homology to the phoP-phoQ system in salmonella and showed that allele replacement of the NMB0595 regulator gene led to loss of virulence, sensitivity to antimicrobial peptides, perturbed protein expression, and magnesium-sensitive growth. On the basis of these findings we proposed that the system should be designated the meningococcal PhoPQ system. Here we further characterized the NMB0595 mutant and demonstrated that it had increased membrane permeability and was unable to form colonies on solid media with low magnesium concentrations, features that are consistent with disruption of PhoPQ-mediated modifications to the lipooligosaccharide structure. We examined the transcriptional profiles of wild-type and NMB0595 mutant strains and found that magnesium-regulated changes in gene expression are completely abrogated in the mutant, indicating that, similar to the salmonella PhoPQ system, the meningococcal PhoPQ system is regulated by magnesium. Transcriptional profiling of the mutant indicated that, also similar to the salmonella PhoPQ system, the meningococcal system is involved in control of virulence and remodeling of the bacterial cell surface in response to the host environment. The results are consistent with the hypothesis that the PhoP homologue plays a role in the meningococcus similar to the role played by PhoP in salmonella. Elucidating the role that the PhoPQ system and PhoPQ-regulated genes play in the response of the meningococcus to the host environment may provide new insights into the pathogenic process.

Indexed as

Gene Expression Regulation, BacterialTranscription, GeneticBacterial ProteinsCell MembraneMagnesiumModels, MolecularNeisseria meningitidisOligonucleotide Array Sequence AnalysisPhenotypeProtein ConformationBacterial ProteinsMagnesiumPhoP protein, BacteriaPhoQ protein, Bacteria

Identifiers

PMID15995212
PMCPMC1169531
OpenAlexW2064711545

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.