Evidence map›Paper›PMID 26344570›Full record

ArticleNature structural & molecular biology2015

Impact of holdase chaperones Skp and SurA on the folding of β-barrel outer-membrane proteins.

Johannes Thoma, Björn M Burmann, Sebastian Hiller, Daniel J Müller

Abstract read
PubMed Publisher
In one paragraph

Article in Nature structural & molecular biology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 57 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
57citing 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

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

  1. Pooled it
  2. Review
  3. Review
  4. Review
  5. Review
  6. Review
  7. Article
  8. FkpA enhances membrane protein folding using an extensive interaction surface.Protein science : a publication of the Protein Society · 2023
    Article
  9. Article
  10. Article
  11. Review
  12. Article
  13. Review
  14. Article
  15. The sacrificial adaptor protein Skp functions to remove stalled substrates from the β-barrel assembly machine.Proceedings of the National Academy of Sciences of the United States of America · 2022
    Article
  16. Article
  17. Article
  18. Review
  19. How do Chaperones Bind (Partly) Unfolded Client Proteins?Frontiers in molecular biosciences · 2021
    Review
  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

4 authors.

Johannes ThomaDepartment of Biosystems Science and Engineering, Eidgenössische Technische Hochschule Zürich, Basel, Switzerland.
Björn M BurmannBiozentrum, University of Basel, Basel, Switzerland.ORCID http://orcid.org/0000-0002-3135-7964
Sebastian HillerBiozentrum, University of Basel, Basel, Switzerland.
Daniel J MüllerDepartment of Biosystems Science and Engineering, Eidgenössische Technische Hochschule Zürich, Basel, Switzerland.ORCID http://orcid.org/0000-0003-3075-0665

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Chaperones increase the folding yields of soluble proteins by suppressing misfolding and aggregation, but how they modulate the folding of integral membrane proteins is not well understood. Here we use single-molecule force spectroscopy and NMR spectroscopy to observe the periplasmic holdase chaperones SurA and Skp shaping the folding trajectory of the large β-barrel outer-membrane receptor FhuA from Escherichia coli. Either chaperone prevents FhuA from misfolding by stabilizing a dynamic, unfolded state, thus allowing the substrate to search for structural intermediates. During this search, the SurA-chaperoned FhuA polypeptide inserts β-hairpins into the membrane in a stepwise manner until the β-barrel is folded. The membrane acts as a free-energy sink for β-hairpin insertion and physically separates transient folds from chaperones. This stabilization of dynamic unfolded states and the trapping of folding intermediates funnel the FhuA polypeptide toward the native conformation.

Indexed as

Models, MolecularBacterial Outer Membrane ProteinsBiophysicsCarrier ProteinsDNA-Binding ProteinsElectrophoresis, Polyacrylamide GelEscherichia coliEscherichia coli ProteinsMagnetic Resonance SpectroscopyMicroscopy, Atomic ForceMolecular ChaperonesPeptidylprolyl IsomeraseProtein ConformationProtein FoldingSpin LabelsBacterial Outer Membrane ProteinsCarrier ProteinsDNA-Binding ProteinsEscherichia coli ProteinsFhuA protein, E coliMolecular ChaperonesPeptidylprolyl IsomeraseSkp protein, E coliSpin LabelsSurA protein, E coli

Identifiers

PMID26344570

What OpenQuestion holds

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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.