Evidence map›Paper›PMID 25161960›Full record

ReviewFrontiers in cellular and infection microbiology2014

Chromosomal islands of Streptococcus pyogenes and related streptococci: molecular switches for survival and virulence.

Scott V Nguyen, William M McShan

Open access · goldAbstract readReview
In one paragraph

Review in Frontiers in cellular and infection microbiology, 2014. 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
3.9field-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

25 citing papers in PubMed, 39 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Review
  5. Article
  6. Expanding the genetic toolbox for the obligate human pathogenFrontiers in bioengineering and biotechnology · 2024
    Article
  7. TheJournal of bacteriology · 2023
    Article
  8. Article
  9. Review
  10. Review
  11. Frontiers in microbiology · 2021
    Article
  12. Cryptic prophages within aMicrobial genomics · 2021
    Article
  13. Article
  14. Article
  15. The Bacteriophages ofMicrobiology spectrum · 2019
    Review
  16. Article
  17. Review
  18. Article
  19. Article
  20. 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

2 authors at 1 institution in 1 country.

Scott V NguyenDepartment of Microbiology and Immunology, The University of Oklahoma Health Sciences Center Oklahoma City, OK, USA.
William M McShanDepartment of Microbiology and Immunology, The University of Oklahoma Health Sciences Center Oklahoma City, OK, USA ; Department of Pharmaceutical Sciences, The University of Oklahoma Health Sciences Center Oklahoma City, OK, USA.
University of Oklahoma Health Sciences Center · US

Funding

Bacteriophage Control of DNA Repair in Streptococcus PyogenesR15AI072718 · NIAID · UNIVERSITY OF OKLAHOMA HLTH SCIENCES CTR · PI MCSHAN, WILLIAM MICHAEL · 2007 to 2013
$1.0M
NIAID NIH HHS R15 AI072718PHS HHS R15A1072718
6 · The paper itself

Abstract

Streptococcus pyogenes is a significant pathogen of humans, annually causing over 700,000,000 infections and 500,000 deaths. Virulence in S. pyogenes is closely linked to mobile genetic elements like phages and chromosomal islands (CI). S. pyogenes phage-like chromosomal islands (SpyCI) confer a complex mutator phenotype on their host. SpyCI integrate into the 5' end of DNA mismatch repair (MMR) gene mutL, which also disrupts downstream operon genes lmrP, ruvA, and tag. During early logarithmic growth, SpyCI excise from the bacterial chromosome and replicate as episomes, relieving the mutator phenotype. As growth slows and the cells enter stationary phase, SpyCI reintegrate into the chromosome, again silencing the MMR operon. This system creates a unique growth-dependent and reversible mutator phenotype. Additional CI using the identical attachment site in mutL have been identified in related species, including Streptococcus dysgalactiae subsp. equisimilis, Streptococcus anginosus, Streptococcus intermedius, Streptococcus parauberis, and Streptococcus canis. These CI have small genomes, which range from 13 to 20 kB, conserved integrase and DNA replication genes, and no identifiable genes encoding capsid proteins. SpyCI may employ a helper phage for packaging and dissemination in a fashion similar to the Staphylococcus aureus pathogenicity islands (SaPI). Outside of the core replication and integration genes, SpyCI and related CI show considerable diversity with the presence of many indels that may contribute to the host cell phenotype or fitness. SpyCI are a subset of a larger family of streptococcal CI who potentially regulate the expression of other host genes. The biological and phylogenetic analysis of streptococcal chromosomal islands provides important clues as to how these chromosomal islands help S. pyogenes and other streptococcal species persist in human populations in spite of antibiotic therapy and immune challenges.

Indexed as

Chromosomes, BacterialGenomic IslandsDNA Mismatch RepairEvolution, MolecularGenes, BacterialGenetic VariationHumansINDEL MutationMicrobial ViabilityMutagenesis, InsertionalMutationPhenotypeRegulatory Sequences, Nucleic AcidStreptococcusStreptococcus pyogenesVirulencegroup A streptococcusmutator phenotypephage-like chromosomal islandsSpyCIStreptococcus pyogenes

Identifiers

PMID25161960
PMCPMC4129442
OpenAlexW2166689012

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.