Evidence map›Paper›PMID 16855227›Full record

ArticleJournal of bacteriology2006

Outer membrane vesicle production by Escherichia coli is independent of membrane instability.

Amanda J McBroom, Alexandra P Johnson, Sreekanth Vemulapalli, Meta J Kuehn

Open access · greenAbstract read
In one paragraph

Article in Journal of bacteriology, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 219 papers.

0numbers the graph read from it
0cells of the map it votes in
219citing papers in PubMed
5.0field-weighted citation impact, top 4% 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

219 citing papers in PubMed, 376 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. Frontiers in bacterial outer membrane vesicles: From basic characteristics to cancer therapy.Chinese journal of cancer research = Chung-kuo yen cheng yen chiu · 2026
    Article
  8. Article
  9. Review
  10. Article
  11. Review
  12. Review
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  14. Biological nanoparticles from Brucella abortusJournal of nanobiotechnology · 2025
    Article
  15. Review
  16. Article
  17. Article
  18. Article
  19. Review
  20. Engineered Membrane Vesicle Production viaACS synthetic biology · 2025
    Article

159 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

4 authors at 3 institutions in 1 country.

Amanda J McBroomDepartment of Biochemistry, Duke University Medical Center, Box 3711, Durham, NC 27710, USA.
Alexandra P Johnson
Sreekanth Vemulapalli
Meta J Kuehn
Duke Medical Center · USDuke University · USDuke University Hospital · US

Funding

Heat-Labile Enterotoxin SecretionR21AI063239 · NIAID · DUKE UNIVERSITY · PI KUEHN, META J · 2005 to 2006
$407k
Production and function of E coli vesiclesR01GM066140 · NIGMS · DUKE UNIVERSITY · PI KUEHN, META J · 2002 to 2003
$231k
NIAID NIH HHS R21 AI063239NIGMS NIH HHS R01 GM066140
6 · The paper itself

Abstract

It has been long noted that gram-negative bacteria produce outer membrane vesicles, and recent data demonstrate that vesicles released by pathogenic strains can transmit virulence factors to host cells. However, the mechanism of vesicle release has remained undetermined. This genetic study addresses whether these structures are merely a result of membrane instability or are formed by a more directed process. To elucidate the regulatory mechanisms and physiological basis of vesiculation, we conducted a screen in Escherichia coli to identify gene disruptions that caused vesicle over- or underproduction. Only a few low-vesiculation mutants and no null mutants were recovered, suggesting that vesiculation may be a fundamental characteristic of gram-negative bacterial growth. Gene disruptions were identified that caused differences in vesicle production ranging from a 5-fold decrease to a 200-fold increase relative to wild-type levels. These disruptions included loci governing outer membrane components and peptidoglycan synthesis as well as the sigma(E) cell envelope stress response. Mutations causing vesicle overproduction did not result in upregulation of the ompC gene encoding a major outer membrane protein. Detergent sensitivity, leakiness, and growth characteristics of the novel vesiculation mutant strains did not correlate with vesiculation levels, demonstrating that vesicle production is not predictive of envelope instability.

Indexed as

Bacterial Outer Membrane ProteinsCell WallDNA-Directed RNA PolymerasesEscherichia coliEscherichia coli ProteinsGene DeletionPorinsSigma FactorTranscription FactorsTransport VesiclesVirulenceBacterial Outer Membrane ProteinsDNA-Directed RNA PolymerasesEscherichia coli ProteinsOmpC proteinPorinsSigma Factorsporulation-specific sigma factorsTranscription Factors

Identifiers

PMID16855227
PMCPMC1540050
OpenAlexW2123486624

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.