Evidence map›Paper›PMID 21283790›Full record

ArticlePLoS genetics2011

The transposon-like Correia elements encode numerous strong promoters and provide a potential new mechanism for phase variation in the meningococcus.

Azeem Siddique, Nicolas Buisine, Ronald Chalmers

Open access · goldAbstract read
In one paragraph

Article in PLoS genetics, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
2.0field-weighted citation impact, top 14% 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

25 citing papers in PubMed, 36 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Article
  5. Article
  6. Article
  7. MITEmSphere · 2019
    Article
  8. Article
  9. Article
  10. Standards in genomic sciences · 2017
    Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Bacterial genome instability.Microbiology and molecular biology reviews : MMBR · 2014
    Review
  16. Article
  17. Article
  18. Review
  19. Promoter propagation in prokaryotes.Nucleic acids research · 2012
    Article
  20. Promoter reuse in prokaryotes.Mobile genetic elements · 2012
    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

3 authors at 3 institutions in 2 countries.

Azeem SiddiqueSchool of Biomedical Sciences, University of Nottingham, Queen's Medical Centre, Nottingham, United Kingdom.
Nicolas Buisine
Ronald Chalmers
Evolution des Régulations Endocriniennes · FRQueen's Medical Centre · GBUniversity of Nottingham · GB

Funding

Wellcome Trust
6 · The paper itself

Abstract

Neisseria meningitidis is the primary causative agent of bacterial meningitis. The genome is rich in repetitive DNA and almost 2% is occupied by a diminutive transposon called the Correia element. Here we report a bioinformatic analysis defining eight subtypes of the element with four distinct types of ends. Transcriptional analysis, using PCR and a lacZ reporter system, revealed that two ends in particular encode strong promoters. The activity of the strongest promoter is dictated by a recurrent polymorphism (Y128) at the right end of the element. We highlight examples of elements that appear to drive transcription of adjacent genes and others that may express small non-coding RNAs. Pair-wise comparisons between three meningococcal genomes revealed that no more than two-thirds of Correia elements maintain their subtype at any particular locus. This is due to recombinational class switching between elements in a single strain. Upon switching subtype, a new allele is available to spread through the population by natural transformation. This process may represent a hitherto unrecognized mechanism for phase variation in the meningococcus. We conclude that the strain-to-strain variability of the Correia elements, and the large number of strong promoters encoded by them, allows for potentially widespread effects within the population as a whole. By defining the strength of the promoters encoded by the eight subtypes of Correia ends, we provide a resource that allows the transcriptional effects of a particular subtype at a given locus to be predicted.

Indexed as

Gene Expression Regulation, BacterialPromoter Regions, GeneticBase SequenceComputational BiologyDNA Transposable ElementsEvolution, MolecularGenome, BacterialHumansMeningitis, MeningococcalMolecular Sequence DataNeisseria gonorrhoeaeNeisseria meningitidisPolymorphism, Single NucleotideRecombination, GeneticRepetitive Sequences, Nucleic AcidRNA, Small UntranslatedDNA Transposable ElementsRNA, Small Untranslated

Identifiers

PMID21283790
PMCPMC3024310
OpenAlexW2071380432

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.