Evidence map›Paper›PMID 22240095›Full record

ReviewThe FEBS journal2012

Alternative folding pathways of the major porin OprF of Pseudomonas aeruginosa.

Etsuko Sugawara, Keiji Nagano, Hiroshi Nikaido

Abstract readReview
In one paragraph

Review in The FEBS journal, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

29 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Review
  3. Article
  4. Broadly Defined Antibiotic Adjuvants forThe Canadian journal of infectious diseases & medical microbiology = Journal canadien des maladies infectieuses et de la microbiologie medicale · 2026
    Review
  5. Review
  6. Article
  7. Microorganisms · 2023
    Review
  8. Review
  9. Molecular Characterization and Designing of a Novel Multiepitope Vaccine Construct AgainstInternational journal of peptide research and therapeutics · 2022
    Article
  10. Outer membrane permeability: Antimicrobials and diverse nutrients bypass porins inProceedings of the National Academy of Sciences of the United States of America · 2021
    Article
  11. Article
  12. Review
  13. The Building Blocks of Antimicrobial Resistance inFrontiers in cellular and infection microbiology · 2021
    Review
  14. The Landscape ofCells · 2020
    Article
  15. Article
  16. Article
  17. Article
  18. Mechanisms and Targeted Therapies for Pseudomonas aeruginosa Lung Infection.American journal of respiratory and critical care medicine · 2018
    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.

Etsuko SugawaraDepartment of Molecular and Cell Biology, University of California, Berkeley, CA, USA.
Keiji Nagano
Hiroshi Nikaido

Funding

BIOCHEMISTRY OF BACTERIAL CELL MEMBRANESR01AI009644 · NIAID · UNIVERSITY OF CALIFORNIA BERKELEY · PI NIKAIDO, HIROSHI · 1985 to 2015
$9.7M
BIOCHEMISTRY OF BACTERIAL CELL MEMBRANESR37AI009644 · NIAID · UNIVERSITY OF CALIFORNIA BERKELEY · PI NIKAIDO, HIROSHI · 1991 to 2000
$467k
NIAID NIH HHS AI-09644NIAID NIH HHS R01 AI009644NIAID NIH HHS R37 AI009644
6 · The paper itself

Abstract

OprF is the major porin of Pseudomonas aeruginosa and allows very slow, nonspecific, diffusion of solutes. The low permeability of this porin channel is a major factor that enhances other types of resistance mechanisms and often creates strong multidrug resistance in this nosocomial pathogen. We have previously shown that the low permeability is caused by the folding of OprF into two conformers: a majority, two-domain closed-channel conformer containing the N-terminal transmembrane β-barrel and the C-terminal periplasmic, globular domain; and a minority, one-domain open-channel conformer comprising < 5% of the protein population. Our analysis of the bifurcate folding pathway using site-directed mutagenesis showed that slowing down the folding of the two-domain conformer increases the fraction of the open, one-domain conformer. Use of outer membrane protein assembly machinery mutants showed that the absence of the Skp chaperone led to an increased proportion of open conformers. As many environmental pathogens causing nosocomial infections appear to have outer membrane protein (OmpA)/OprF homologs as the major porin, efforts to understand the low permeability of these 'slow porins' are important in our fight against these organisms.

Indexed as

Protein FoldingBacterial ProteinsMolecular ChaperonesMutagenesis, Site-DirectedPorinsProtein ConformationPseudomonas aeruginosaBacterial ProteinsMolecular ChaperonesOprF protein, Pseudomonas aeruginosaPorins

Identifiers

PMID22240095
PMCPMC3338866

What OpenQuestion holds

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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.