Evidence map›Paper›PMID 39218969›Full record

ArticleNature communications2024

Outer membrane protein assembly mediated by BAM-SurA complexes.

Katherine L Fenn, Jim E Horne, Joel A Crossley, Nils Böhringer, Romany J Horne, Till F Schäberle, Antonio N Calabrese, Sheena E Radford, Neil A Ranson

Abstract read
In one paragraph

Article in Nature communications, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
–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

24 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Review
  8. Review
  9. Structures of folding intermediates on BAM show diverse substrates fold by a conserved mechanism.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  10. Article
  11. Review
  12. A fluorescent reporter and single-turnover kinetics reveal insight into BAM complex function.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Review
  19. Article
  20. Review
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

9 authors.

Katherine L Fenn *Astbury Centre for Structural Molecular Biology and School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, LS2 9JT, UK.
Jim E Horne *Astbury Centre for Structural Molecular Biology and School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, LS2 9JT, UK.ORCID 0000-0001-5260-2634
Joel A CrossleyAstbury Centre for Structural Molecular Biology and School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, LS2 9JT, UK.ORCID 0000-0002-6656-1578
Nils BöhringerInstitute for Insect Biotechnology, Justus-Liebig-University Giessen, 35392, Giessen, Germany.
Romany J HorneAstbury Centre for Structural Molecular Biology and School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, LS2 9JT, UK.ORCID 0000-0001-9711-7691
Till F SchäberleInstitute for Insect Biotechnology, Justus-Liebig-University Giessen, 35392, Giessen, Germany.ORCID 0000-0001-9947-8079
Antonio N CalabreseAstbury Centre for Structural Molecular Biology and School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, LS2 9JT, UK.ORCID 0000-0003-2437-7761
Sheena E RadfordAstbury Centre for Structural Molecular Biology and School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, LS2 9JT, UK. s.e.radford@leeds.ac.uk.ORCID 0000-0002-3079-8039
Neil A RansonAstbury Centre for Structural Molecular Biology and School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, LS2 9JT, UK. n.a.ranson@leeds.ac.uk.ORCID 0000-0002-3640-5275

Funding

German Federal Ministry of Education and ResearchMedical Research Council MR/P018491/1RCUK | Biotechnology and Biological Sciences Research Council (BBSRC) BB/T008059/1RCUK | Biotechnology and Biological Sciences Research Council (BBSRC) BB/X015653/1Wellcome Trust 080859Wellcome Trust 220628Wellcome Trust 221524Wellcome Trust 223810Wellcome Trust (Wellcome) 221524/Z/20/Z
6 · The paper itself

Abstract

The outer membrane is a formidable barrier that protects Gram-negative bacteria against environmental threats. Its integrity requires the correct folding and insertion of outer membrane proteins (OMPs) by the membrane-embedded β-barrel assembly machinery (BAM). Unfolded OMPs are delivered to BAM by the periplasmic chaperone SurA, but how SurA and BAM work together to ensure successful OMP delivery and folding remains unclear. Here, guided by AlphaFold2 models, we use disulphide bond engineering in an attempt to trap SurA in the act of OMP delivery to BAM, and solve cryoEM structures of a series of complexes. The results suggest that SurA binds BAM at its soluble POTRA-1 domain, which may trigger conformational changes in both BAM and SurA that enable transfer of the unfolded OMP to the BAM lateral gate for insertion into the outer membrane. Mutations that disrupt the interaction between BAM and SurA result in outer membrane assembly defects, supporting the key role of SurA in outer membrane biogenesis.

Indexed as

Bacterial Outer Membrane ProteinsEscherichia coliEscherichia coli ProteinsProtein FoldingCarrier ProteinsCryoelectron MicroscopyModels, MolecularMolecular ChaperonesMutationPeptidylprolyl IsomeraseProtein BindingBacterial Outer Membrane ProteinsBamA protein, E coliCarrier ProteinsEscherichia coli ProteinsMolecular ChaperonesPeptidylprolyl IsomeraseSurA protein, E coli

Identifiers

PMID39218969
PMCPMC11366764

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.