Evidence map›Paper›PMID 17976161›Full record

ArticleMolecular microbiology2007

A linear plasmid truncation induces unidirectional flagellar phase change in H:z66 positive Salmonella Typhi.

Stephen Baker, Kathryn Holt, Sally Whitehead, Ian Goodhead, Tim Perkins, Bruce Stocker, Jonathan Hardy, Gordon Dougan

Open access · hybridAbstract read
In one paragraph

Article in Molecular microbiology, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
2.4field-weighted citation impact, top 11% 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

11 citing papers in PubMed, 25 citations in OpenAlex.

  1. Article
  2. Identification and Characterization of a GeneFrontiers in cellular and infection microbiology · 2016
    Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Navigating the future of bacterial molecular epidemiology.Current opinion in microbiology · 2010
    Review
  9. Expression of FLJB:Z66 on a Linear Plasmid of Salmonella Enterica Serovar Typhi is Dependent on FLIA and FLHDC and Regulated By OMPR.Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] · 2010
    Article
  10. Article
  11. 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 1 institution in 1 country.

Stephen BakerThe Wellcome Trust Sanger Institute, The Wellcome Trust Genome Campus, Hinxton, Cambridgeshire CB10 1SA, UK. sgb@sanger.ac.uk
Kathryn Holt
Sally Whitehead
Ian Goodhead
Tim Perkins
Bruce Stocker
Jonathan Hardy
Gordon Dougan
Wellcome Sanger Institute · GB

Funding

Wellcome Trust 076962
6 · The paper itself

Abstract

The process by which bacteria regulate flagellar expression is known as phase variation and in Salmonella enterica this process permits the expression of one of two flagellin genes, fliC or fljB, at any one time. Salmonella Typhi (S. Typhi) is normally not capable of phase variation of flagellar antigen expression as isolates only harbour the fliC gene (H:d) and lacks an equivalent fljB locus. However, some S. Typhi isolates, exclusively from Indonesia, harbour an fljB equivalent encoded on linear plasmid, pBSSB1 that drives the expression of a novel flagellin named H:z66. H:z66+S. Typhi isolates were stimulated to change flagellar phase and genetically analysed for the mechanism of variation. The phase change was demonstrated to be unidirectional, reverting to expression from the resident chromosomal fliC gene. DNA sequencing demonstrated that pBSSB1 linear DNA was still detectable but that these derivatives had undergone deletion and were lacking fljA(z66) (encoding a flagellar repressor) and fljB(z66). The deletion end-point was found to involve one of the plasmid termini and a palindromic repeat sequence within fljB(z66), distinct to that found at the terminus of pBSSB1. These data demonstrate that, like some Streptomyces linear elements, at least one of the terminal inverted repeats of pBSSB1 is non-essential, but that a palindromic repeat sequence may be necessary for replication.

Indexed as

Antigens, BacterialBacterial ProteinsFlagellaFlagellinPlasmidsRepressor ProteinsSalmonella typhiSequence Analysis, DNASequence DeletionAntigens, BacterialBacterial ProteinsFlagellinFljA protein, SalmonellaFljB protein, SalmonellaRepressor Proteins

Identifiers

PMID17976161
PMCPMC2652032
OpenAlexW2011075477

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.