Evidence map›Paper›PMID 22411979›Full record

ReviewPhilosophical transactions of the Royal Society of London. Series B, Biological sciences2012

Assembly and mechanisms of bacterial type IV secretion machines.

Ellen L Zechner, Silvia Lang, Joel F Schildbach

Open access · bronzeAbstract readReview
In one paragraph

Review in Philosophical transactions of the Royal Society of London. Series B, Biological sciences, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 86 papers.

0numbers the graph read from it
0cells of the map it votes in
86citing papers in PubMed
11.6field-weighted citation impact, top 1% 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

86 citing papers in PubMed, 163 citations in OpenAlex.

  1. AnMicroorganisms · 2025
    Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Review
  13. Article
  14. Review
  15. Review
  16. Article
  17. Review
  18. Article
  19. Structural bases for F plasmid conjugation and F pilus biogenesis inProceedings of the National Academy of Sciences of the United States of America · 2019
    Article
  20. Article

26 more citing papers are in PubMed but not listed here.

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 2 institutions in 2 countries.

Ellen L ZechnerInstitute of Molecular Biosciences, University of Graz, Humboldtstrasse 50/I, Graz 8010, Austria. ellen.zechner@uni-graz.at
Silvia Lang
Joel F Schildbach
University of Graz · ATJohns Hopkins University · US

Funding

Molecular Analysis of Tral IE. Coli Helicase 1) FunctionR01GM061017 · NIGMS · JOHNS HOPKINS UNIVERSITY · PI SCHILDBACH, JOEL F · 2002 to 2010
$3.2M
Austrian Science Fund FWF P 24016NIGMS NIH HHS GM61017NIGMS NIH HHS R01 GM061017
6 · The paper itself

Abstract

Type IV secretion occurs across a wide range of prokaryotic cell envelopes: Gram-negative, Gram-positive, cell wall-less bacteria and some archaea. This diversity is reflected in the heterogeneity of components that constitute the secretion machines. Macromolecules are secreted in an ATP-dependent process using an envelope-spanning multi-protein channel. Similar to the type III systems, this apparatus extends beyond the cell surface as a pilus structure important for direct contact and penetration of the recipient cell surface. Type IV systems are remarkably versatile in that they mobilize a broad range of substrates, including single proteins, protein complexes, DNA and nucleoprotein complexes, across the cell envelope. These machines have broad clinical significance not only for delivering bacterial toxins or effector proteins directly into targeted host cells, but also for direct involvement in phenomena such as biofilm formation and the rapid horizontal spread of antibiotic resistance genes among the microbial community.

Indexed as

Bacterial Secretion SystemsBacteriaCell MembraneConjugation, GeneticDNA, BacterialFimbriae, BacterialFimbriae ProteinsMacromolecular SubstancesMolecular ChaperonesProtein Interaction MappingProtein StabilityProtein TransportSignal TransductionSubstrate SpecificityBacterial Secretion SystemsDNA, BacterialFimbriae ProteinsMacromolecular SubstancesMolecular Chaperones

Identifiers

PMID22411979
PMCPMC3297438
OpenAlexW2116273677

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.