Evidence map›Paper›PMID 22056931›Full record

ArticleJournal of bacteriology2012

Characterization of DNA sequences required for the CcrAB-mediated integration of staphylococcal cassette chromosome mec, a Staphylococcus aureus genomic island.

Lei Wang, Martin Safo, Gordon L Archer

Open access · bronzeAbstract read
In one paragraph

Article in Journal of bacteriology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
0.9field-weighted citation impact, top 27% 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

23 citing papers in PubMed, 30 citations in OpenAlex.

  1. Prevalence and antimicrobial susceptibility ofOne health (Amsterdam, Netherlands) · 2026
    Article
  2. Staphylococcal Cassette ChromosomeAntibiotics (Basel, Switzerland) · 2026
    Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Misidentification of meticillin-resistantEuro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin · 2021
    Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Review
  16. Factors Contributing to the Evolution ofFrontiers in microbiology · 2018
    Review
  17. Article
  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

3 authors at 1 institution in 1 country.

Lei WangDepartment of Internal Medicine, Division of Infectious Diseases, School of Medicine, Virginia Commonwealth University School of Medicine, Richmond, Virginia, USA.
Martin Safo
Gordon L Archer
Virginia Commonwealth University · US

Funding

Virus Vector Shared ResourceP30CA016059 · NCI · VIRGINIA COMMONWEALTH UNIVERSITY · PI Keri R Maher · 1985 to 2026
$51.0M
Staphylococcal methicillin resistance locusR01AI035705 · NIAID · VIRGINIA COMMONWEALTH UNIVERSITY · PI ARCHER, GORDON LEE · 2004 to 2014
$4.6M
NCI NIH HHS P30 CA016059NIAID NIH HHS 2R01AI035705NIAID NIH HHS R01 AI035705
6 · The paper itself

Abstract

The mobile element staphylococcal cassette chromosome mec (SCCmec), which carries mecA, the gene responsible for methicillin resistance in staphylococci, inserts into the chromosome at a specific site, attB, mediated by serine recombinases, CcrAB and CcrC, encoded on the element. This study sought to determine the sequence specificity for CcrB DNA binding in vitro and for CcrAB-mediated SCCmec insertion in vivo. CcrB DNA binding, as assessed in vitro by electrophoretic mobility shift assay (EMSA), revealed that a 14-bp sequence (CGTATCATAAGTAA; the terminal sequence of the orfX gene) was the minimal requirement for binding, containing an invariant sequence (TATCATAA) found in all chromosomal (attB) and SCCmec (attS) integration sites. The sequences flanking the minimal attB and attS binding sites required for insertion in vivo were next determined. A plasmid containing only 37 bp of attS and flanking sequences was required for integration into the attB site at 92% efficiency. In contrast, at least 200 bp of sequence within orfX, 5' to the attB core, and 120 bp of specific sequence 3' to the orfX stop site and attB core were required for the highest insertion frequency. Finally, an attS-containing plasmid was inserted into wild-type Staphylococcus aureus strains without integrated SCCmec (methicillin susceptible) at various frequencies which were determined both by sequences flanking the att site and by the presence of more than one att site on either the chromosome or the integration plasmid. This sequence specificity may play a role in the epidemiology of SCCmec acquisition.

Indexed as

Bacterial ProteinsBase SequenceBinding SitesChromosomes, BacterialDNA, BacterialDNA Transposable ElementsEscherichia coliGene Expression Regulation, BacterialGenomic IslandsMolecular Sequence AnnotationMutationStaphylococcus aureusBacterial ProteinsDNA, BacterialDNA Transposable Elements

Identifiers

PMID22056931
PMCPMC3256654
OpenAlexW2043900427

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.