Evidence map›Paper›PMID 19966009›Full record

ArticleJournal of bacteriology2010

Analysis of the mobilization functions of the vancomycin resistance transposon Tn1549, a member of a new family of conjugative elements.

Krassimira Tsvetkova, Jean-Christophe Marvaud, Thierry Lambert

Open access · greenAbstract read
In one paragraph

Article in Journal of bacteriology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
1.7field-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

22 citing papers in PubMed, 37 citations in OpenAlex.

  1. Clostridioides difficile pathogenesis and control.Nature reviews. Microbiology · 2026
    Review
  2. Review
  3. The R plasmid pRAS2 in the fish pathogenFrontiers in microbiology · 2026
    Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Genetic Mechanisms of Vancomycin Resistance inAntibiotics (Basel, Switzerland) · 2022
    Review
  9. Article
  10. Identification and Characterization ofFrontiers in microbiology · 2019
    Article
  11. Frontiers in microbiology · 2019
    Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Review
  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.

Krassimira TsvetkovaEA4043 Centre d'Etudes Pharmaceutiques, Université Paris XI, 92296 Châtenay-Malabry, Cedex, France.
Jean-Christophe Marvaud
Thierry Lambert
Université Paris-Saclay · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Conjugative transfer from Clostridium symbiosum to enterococci of Tn1549, which confers VanB-type vancomycin resistance, has been reported. This indicates the presence of a transfer origin (oriT) in the element. Transcription analysis of Tn1549 indicated that orf29, orf28, orfz, and orf27 were cotranscribed. A pACYC184 derivative containing 250 bp intergenic to orf29-orf30 of Tn1549 was mobilized in Escherichia coli recA::RP4::Delta nic provided that orf28 and orf29 were delivered simultaneously. These open reading frame (ORF) genes were able to promote mobilization in trans, but a cis-acting preference was observed. On the basis of a mobilization assay, a minimal 28-bp oriT was delimited, although the frequency of transfer was significantly reduced compared to that of a 130-bp oriT fragment. The minimal oriT contained an inverted repeat and a core, which was homologous to the cleavage sequence found in certain Gram-positive rolling-circle replicating (RCR) plasmids. While Orf29 was a mobilization accessory component similar to MobC proteins, Orf28 was identified as a relaxase belonging to a new phyletic cluster of the MOB(p) superfamily. The nick site was identified within oriT by an oligonucleotide cleavage assay. Closely related oriTs linked to mobilization genes were detected in data banks; they were found in various integrative and conjugative elements (ICEs) originating mainly from anaerobes. These results support the notion that Tn1549 is a member of a MOB(p) clade. Interestingly, the Tn1549-derived constructs were mobilized by RP4 in E. coli, suggesting that a relaxosome resulting from DNA cleavage by Orf28 interacted with the coupling protein TraG. This demonstrates the capacity of Tn1549 to be mobilized by a heterologous transfer system.

Indexed as

Bacterial ProteinsClostridium symbiosumConjugation, GeneticDNA, IntergenicDNA Transposable ElementsElectrophoretic Mobility Shift AssayEnterococcusMutagenesisPhylogenyVancomycin ResistanceBacterial ProteinsDNA, IntergenicDNA Transposable Elements

Identifiers

PMID19966009
PMCPMC2812457
OpenAlexW2162357180

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.