Evidence map›Paper›PMID 24810170›Full record

ArticlePloS one2014

Synthesis of RpoS is dependent on a putative enhancer binding protein Rrp2 in Borrelia burgdorferi.

Zhiming Ouyang, Jianli Zhou, Michael V Norgard

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2014. 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
2.6field-weighted citation impact, top 12% 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, 23 citations in OpenAlex.

  1. Virulence Regulation inMicroorganisms · 2025
    Review
  2. Article
  3. Infection and immunity · 2025
    Article
  4. Article
  5. Deletion of a Genetic Region of lp17 Affects Plasmid Copy Number inFrontiers in cellular and infection microbiology · 2022
    Article
  6. Gene Regulation and Transcriptomics.Current issues in molecular biology · 2021
    Article
  7. Interactions between Borrelia burgdorferi and ticks.Nature reviews. Microbiology · 2020
    Review
  8. The CXXC Motifs Are Essential for the Function of BosR inFrontiers in cellular and infection microbiology · 2019
    Article
  9. Article
  10. Review
  11. Investigation ofFrontiers in cellular and infection microbiology · 2017
    Article
  12. Article
  13. Article
  14. Article
  15. Multifunctional and Redundant Roles ofFrontiers in immunology · 2016
    Review
  16. Article
  17. Gene Regulation During the Enzootic Cycle of the Lyme Disease Spirochete.Forum on immunopathological diseases and therapeutics · 2016
    Article
  18. Genetic Manipulation of Borrelia Spp.Current topics in microbiology and immunology
    Review
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

3 authors at 1 institution in 1 country.

Zhiming OuyangDepartment of Microbiology, University of Texas Southwestern Medical Center, Dallas, Texas, United States of America.
Jianli ZhouDepartment of Microbiology, University of Texas Southwestern Medical Center, Dallas, Texas, United States of America.
Michael V NorgardDepartment of Microbiology, University of Texas Southwestern Medical Center, Dallas, Texas, United States of America.
The University of Texas Southwestern Medical Center · US

Funding

The RpoN-RpoS regulatory pathway in Borrelia burgdorferiR01AI059062 · NIAID · UT SOUTHWESTERN MEDICAL CENTER · PI NORGARD, MICHAEL V. · 2004 to 2019
$6.2M
The RpoN-RpoS regulatory pathway in Borrelia burgdorferiR56AI059062 · NIAID · UT SOUTHWESTERN MEDICAL CENTER · PI NORGARD, MICHAEL V. · 2009 to 2009
$323k
NIAID NIH HHS AI-059062NIAID NIH HHS R01 AI059062NIAID NIH HHS R56 AI059062
6 · The paper itself

Abstract

The RpoN-RpoS regulatory pathway plays a central role in governing adaptive changes by B. burgdorferi when the pathogen shuttles between its tick vector and mammalian hosts. In general, transcriptional activation of bacterial RpoN (σ54)-dependent genes requires an enhancer binding protein. B. burgdorferi encodes the putative enhancer binding protein Rrp2. Previous studies have revealed that the expression of σ54-dependent rpoS was abolished in an rrp2 point mutant. However, direct evidence linking the production of Rrp2 in B. burgdorferi and the expression of rpoS has been lacking, primarily due to the inability to inactivate rrp2 via deletion or insertion mutagenesis. Herein we introduced a regulatable (IPTG-inducible) rrp2 expression shuttle plasmid into B. burgdorferi, and found that the controlled up-regulation of Rrp2 resulted in the induction of σ54-dependent rpoS expression. Moreover, we created an rrp2 conditional lethal mutant in virulent B. burgdorferi. By exploiting this conditional mutant, we were able to experimentally manipulate the temporal level of Rrp2 expression in B. burgdorferi, and examine its direct impact on activation of the RpoN-RpoS regulatory pathway. Our data revealed that the synthesis of RpoS was coincident with the IPTG-induced Rrp2 levels in B. burgdorferi. In addition, the synthesis of OspC, a lipoprotein required by B. burgdorferi to establish mammalian infection, was rescued in the rrp2 point mutant when RpoS production was restored, suggesting that Rrp2 influences ospC expression indirectly via its control over RpoS. These data demonstrate that Rrp2 is required for the synthesis of RpoS, presumably via its action as an enhancer binding protein for the activation of RpoN and subsequent transcription of rpoS in B. burgdorferi.

Indexed as

Bacterial ProteinsBorrelia burgdorferiGene Expression Regulation, BacterialPoint MutationSigma FactorBacterial ProteinsSigma Factor

Identifiers

PMID24810170
PMCPMC4014564
OpenAlexW1979230335

What OpenQuestion holds

Textmetadata
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.