Evidence map›Paper›PMID 22245966›Full record

ArticleNature structural & molecular biology2012

Newly folded substrates inside the molecular cage of the HtrA chaperone DegQ.

Hélène Malet, Flavia Canellas, Justyna Sawa, Jun Yan, Konstantinos Thalassinos, Michael Ehrmann, Tim Clausen, Helen R Saibil

Abstract read
In one paragraph

Article in Nature structural & molecular biology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
3.2field-weighted citation impact, top 7% 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

33 citing papers in PubMed, 59 citations in OpenAlex.

  1. Chemical reviews · 2026
    Review
  2. Article
  3. Review
  4. Article
  5. Article
  6. Article
  7. Article
  8. Oligomeric assembly regulating mitochondrial HtrA2 function as examined by methyl-TROSY NMR.Proceedings of the National Academy of Sciences of the United States of America · 2021
    Article
  9. Article
  10. Review
  11. How do Chaperones Bind (Partly) Unfolded Client Proteins?Frontiers in molecular biosciences · 2021
    Review
  12. Article
  13. Article
  14. Article
  15. Review
  16. Amino-Terminal Processing ofFrontiers in microbiology · 2018
    Article
  17. Article
  18. Article
  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

8 authors at 4 institutions in 4 countries.

Hélène MaletInstitute of Structural and Molecular Biology, Crystallography, Birkbeck College, London, UK.
Flavia Canellas
Justyna Sawa
Jun Yan
Konstantinos Thalassinos
Michael Ehrmann
Tim Clausen
Helen R Saibil
Institute of Structural and Molecular Biology · GBResearch Institute of Molecular Pathology · ATBirkbeck, University of London · GBUniversity of Duisburg-Essen · DE

Funding

Austrian Science Fund FWF I 235Biotechnology and Biological Sciences Research Council BB/F010281/1Wellcome TrustWellcome Trust 079605Wellcome Trust 089050
6 · The paper itself

Abstract

The HtrA protein family combines chaperone and protease activities and is essential for protein quality control in many organisms. Whereas the mechanisms underlying the proteolytic function of HtrA proteins are well characterized, their chaperone activity remains poorly understood. Here we describe cryo-EM structures of Escherichia coli DegQ in its 12- and 24-mer states in complex with model substrates, providing a structural model of HtrA chaperone action. Up to six lysozyme substrates bind inside the DegQ 12-mer cage and are visualized in a close-to-native state. An asymmetric reconstruction reveals the binding of a well-ordered lysozyme to four DegQ protomers. DegQ PDZ domains are located adjacent to substrate density and their presence is required for chaperone activity. The substrate-interacting regions appear conserved in 12- and 24-mer cages, suggesting a common mechanism of chaperone function.

Indexed as

Cryoelectron MicroscopyEscherichia coliEscherichia coli ProteinsModels, MolecularMolecular ChaperonesMuramidaseProtein MultimerizationProtein Structure, QuaternarySerine EndopeptidasesDegQ protein, E coliEscherichia coli ProteinsMolecular ChaperonesMuramidaseSerine Endopeptidases

Identifiers

PMID22245966
PMCPMC3272482
OpenAlexW2022648483

What OpenQuestion holds

Textmetadata
LicenceTDM
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.