Evidence map›Paper›PMID 18978053›Full record

ArticleJournal of bacteriology2009

Type II secretion system secretin PulD localizes in clusters in the Escherichia coli outer membrane.

Nienke Buddelmeijer, Martin Krehenbrink, Frédéric Pecorari, Anthony P Pugsley

Abstract read
In one paragraph

Article in Journal of bacteriology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
2.9field-weighted citation impact, top 11% 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

18 citing papers in PubMed, 47 citations in OpenAlex.

  1. Article
  2. Nanofitins and their applications in human health and lung diseases.Molecular therapy : the journal of the American Society of Gene Therapy · 2023
    Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Structural insights into the Type II secretion nanomachine.Current opinion in structural biology · 2012
    Review
  12. Review
  13. Article
  14. Review
  15. Article
  16. Article
  17. Review
  18. 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

4 authors at 3 institutions in 1 country.

Nienke BuddelmeijerInstitut Pasteur, Molecular Genetics Unit and CNRS URA2172, 25 rue du Dr. Roux, 75724 Paris Cedex 15, France.
Martin Krehenbrink
Frédéric Pecorari
Anthony P Pugsley
Centre National de la Recherche Scientifique · FRInstitut Pasteur · FRNantes Université · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The cellular localization of a chimera formed by fusing a monomeric red fluorescent protein to the C terminus of the Klebsiella oxytoca type II secretion system outer membrane secretin PulD (PulD-mCherry) in Escherichia coli was determined in vivo by fluorescence microscopy. Like PulD, PulD-mCherry formed sodium dodecyl sulfate- and heat-resistant multimers and was functional in pullulanase secretion. Chromosome-encoded PulD-mCherry formed fluorescent foci on the periphery of the cell in the presence of high (plasmid-encoded) levels of its cognate chaperone, the pilotin PulS. Subcellular fractionation demonstrated that the chimera was located exclusively in the outer membrane under these circumstances. A similar localization pattern was observed by fluorescence microscopy of fixed cells treated with green fluorescent protein-tagged affitin, which binds with high affinity to an epitope in the N-terminal region of PulD. At lower levels of (chromosome-encoded) PulS, PulD-mCherry was less stable, was located mainly in the inner membrane, from which it could not be solubilized with urea, and did not induce the phage shock response, unlike PulD in the absence of PulS. The fluorescence pattern of PulD-mCherry under these conditions was similar to that observed when PulS levels were high. The complete absence of PulS caused the appearance of bright and almost exclusively polar fluorescent foci.

Indexed as

Bacterial Outer Membrane ProteinsChromosomes, BacterialDNA PrimersElectrophoresis, Polyacrylamide GelEscherichia coliImmunoblottingKlebsiellaMolecular ChaperonesPlasmidsPolymerase Chain ReactionPromoter Regions, GeneticBacterial Outer Membrane ProteinsDNA PrimersMolecular ChaperonesPulD protein, Klebsiella pneumoniae

Identifiers

PMID18978053
PMCPMC2612452
OpenAlexW2061628951

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.