Evidence map›Paper›PMID 26385289›Full record

ArticleMicrobiology (Reading, England)2015

Motility defects in Campylobacter jejuni defined gene deletion mutants caused by second-site mutations.

Stefan P W de Vries, Srishti Gupta, Abiyad Baig, Joanna L'Heureux, Elsa Pont, Dominika P Wolanska, Duncan J Maskell, Andrew J Grant

Abstract read
In one paragraph

Article in Microbiology (Reading, England), 2015. 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
–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

18 citing papers in PubMed.

  1. Trial
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  6. Article
  7. Experimental Evolution ofFrontiers in microbiology · 2020
    Article
  8. Article
  9. Article
  10. Antibiotic Sensitivity Profiling and Virulence Potential ofInternational journal of environmental research and public health · 2018
    Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. The Minor Flagellin ofFrontiers in microbiology · 2016
    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.

Stefan P W de VriesDepartment of Veterinary Medicine, University of Cambridge, Cambridge, UK.
Srishti GuptaDepartment of Veterinary Medicine, University of Cambridge, Cambridge, UK.
Abiyad BaigDepartment of Veterinary Medicine, University of Cambridge, Cambridge, UK.
Joanna L'HeureuxDepartment of Veterinary Medicine, University of Cambridge, Cambridge, UK.
Elsa PontDepartment of Veterinary Medicine, University of Cambridge, Cambridge, UK.
Dominika P WolanskaDepartment of Veterinary Medicine, University of Cambridge, Cambridge, UK.
Duncan J MaskellDepartment of Veterinary Medicine, University of Cambridge, Cambridge, UK.
Andrew J GrantDepartment of Veterinary Medicine, University of Cambridge, Cambridge, UK.

Funding

Biotechnology and Biological Sciences Research Council RG66581
6 · The paper itself

Abstract

Genetic variation due to mutation and phase variation has a considerable impact on the commensal and pathogenic behaviours of Campylobacter jejuni. In this study, we provide an example of how second-site mutations can interfere with gene function analysis in C. jejuni. Deletion of the flagellin B gene (flaB) in C. jejuni M1 resulted in mutant clones with inconsistent motility phenotypes. From the flaB mutant clones picked for further analysis, two were motile, one showed intermediate motility and two displayed severely attenuated motility. To determine the molecular basis of this differential motility, a genome resequencing approach was used. Second-site mutations were identified in the severely attenuated and intermediate motility flaB mutant clones: a TA-dinucleotide deletion in fliW and an A deletion in flgD, respectively. Restoration of WT fliW, using a newly developed genetic complementation system, confirmed that the second-site fliW mutation caused the motility defect as opposed to the primary deletion of flaB. This study highlights the importance of (i) screening multiple defined gene deletion mutant clones, (ii) genetic complementation of the gene deletion and ideally (iii) screening for second-site mutations that might interfere with the pathways/mechanisms under study.

Indexed as

Sequence DeletionBacterial ProteinsCampylobacter jejuniGene DeletionGene Expression Regulation, BacterialBacterial Proteins

Identifiers

PMID26385289
PMCPMC4811654

What OpenQuestion holds

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Registered trials

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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.