Evidence map›Paper›PMID 23319565›Full record

ArticleInfection and immunity2013

Diverse genetic regulon of the virulence-associated transcriptional regulator MucR in Brucella abortus 2308.

Clayton C Caswell, Ahmed E M Elhassanny, Emilie E Planchin, Christelle M Roux, Jenni N Weeks-Gorospe, Thomas A Ficht, Paul M Dunman, R Martin Roop

Open access · bronzeAbstract read
In one paragraph

Article in Infection and immunity, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed
4.3field-weighted citation impact, top 7% 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

38 citing papers in PubMed, 54 citations in OpenAlex.

  1. Article
  2. Review
  3. Review
  4. Review
  5. Deletion of theFrontiers in immunology · 2025
    Article
  6. Review
  7. Article
  8. Article
  9. Article
  10. Comparison of CcrM-dependent methylation inJournal of bacteriology · 2024
    Article
  11. Comparison of CcrM-dependent methylation inbioRxiv : the preprint server for biology · 2024
    Article
  12. MucR fromInternational journal of molecular sciences · 2023
    Article
  13. TheAnnual review of microbiology · 2023
    Review
  14. Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. Uncovering the Hidden Credentials ofMicrobiology and molecular biology reviews : MMBR · 2021
    Review
  20. Deletion of the Transcriptional Regulator MucR inFrontiers in veterinary science · 2021
    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 1 country.

Clayton C CaswellDepartment of Microbiology and Immunology, East Carolina University School of Medicine, Greenville, North Carolina, USA.
Ahmed E M Elhassanny
Emilie E Planchin
Christelle M Roux
Jenni N Weeks-Gorospe
Thomas A Ficht
Paul M Dunman
R Martin Roop
East Carolina University · USTexas A&M University · USUniversity of Rochester Medical Center · US

Funding

BRUCELLA STATIONARY PHASE GENE EXPRESSION AND VIRULENCER01AI048499 · NIAID · LOUISIANA STATE UNIV HSC SHREVEPORT · PI ROOP, ROY M · 2000 to 2010
$2.8M
Improved Live Attenuated Brucella Vaccines to Reduce Human DiseasesR01HD084339 · NICHD · TEXAS A&M AGRILIFE RESEARCH · PI FICHT, THOMAS A · 2015 to 2017
$1.8M
Brucella Stationary Phase Gene Expression and VirulenceR21AI048499 · NIAID · EAST CAROLINA UNIVERSITY · PI ROOP, ROY M · 2004 to 2004
$377k
NIAID NIH HHS AI48499NIAID NIH HHS R01 AI048499NIAID NIH HHS R21 AI048499NICHD NIH HHS R01 HD084339
6 · The paper itself

Abstract

The Ros-type regulator MucR is one of the few transcriptional regulators that have been linked to virulence in Brucella. Here, we show that a Brucella abortus in-frame mucR deletion strain exhibits a pronounced growth defect during in vitro cultivation and, more importantly, that the mucR mutant is attenuated in cultured macrophages and in mice. The genetic basis for the attenuation of Brucella mucR mutants has not been defined previously, but in the present study the genes regulated by MucR in B. abortus have been elucidated using microarray analysis and real-time reverse transcription-PCR (RT-PCR). In B. abortus 2308, MucR regulates a wide variety of genes whose products may function in establishing and maintaining cell envelope integrity, polysaccharide biosynthesis, iron homeostasis, genome plasticity, and transcriptional regulation. Particularly notable among the MucR-regulated genes identified is arsR6 (nolR), which encodes a transcriptional regulator previously linked to virulence in Brucella melitensis 16 M. Importantly, electrophoretic mobility shift assays (EMSAs) determined that a recombinant MucR protein binds directly to the promoter regions of several genes repressed by MucR (including arsR6 [nolR]), and in Brucella, as in other alphaproteobacteria, MucR binds to its own promoter to repress expression of the gene that encodes it. Overall, these studies have uncovered the diverse genetic regulon of MucR in Brucella, and in doing so this work has begun to define the MucR-controlled genetic circuitry whose misregulation contributes to the virulence defect of Brucella mucR mutants.

Indexed as

Gene Expression Regulation, BacterialRegulonAnimalsBrucella abortusBrucellosisDisease Models, AnimalDNA, BacterialElectrophoretic Mobility Shift AssayGene DeletionGene Expression ProfilingMacrophages, PeritonealMiceMice, Inbred C57BLMicrobial ViabilityPromoter Regions, GeneticProtein BindingDNA, BacterialRepressor ProteinsVirulence Factors

Identifiers

PMID23319565
PMCPMC3639602
OpenAlexW2134075109

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.