Evidence map›Paper›PMID 27439868›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2016

Characterization of a stalled complex on the β-barrel assembly machine.

James Lee, Mingyu Xue, Joseph S Wzorek, Tao Wu, Marcin Grabowicz, Luisa S Gronenberg, Holly A Sutterlin, Rebecca M Davis, Natividad Ruiz, Thomas J Silhavy and 1 more

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 67 papers.

0numbers the graph read from it
0cells of the map it votes in
67citing 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

67 citing papers in PubMed.

  1. A mechanism for substrate quality control in outer membrane protein assembly.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  2. Review
  3. 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
  4. Article
  5. Article
  6. Article
  7. Small siphophage binding to an open state of the LptDE outer membrane lipopolysaccharide translocon.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  8. Article
  9. Review
  10. Review
  11. Native β-barrel substrates pass through two shared intermediates during folding on the BAM complex.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  12. Review
  13. Article
  14. Review
  15. Article
  16. The Name Is Barrel, β-Barrel.Methods in molecular biology (Clifton, N.J.) · 2024
    Article
  17. Article
  18. Article
  19. Cracking outer membrane biogenesis.Biochimica et biophysica acta. Molecular cell research · 2023
    Article
  20. Article

7 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

11 authors.

James LeeDepartment of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138; Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA 02138;
Mingyu XueDepartment of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138;
Joseph S WzorekDepartment of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138;
Tao WuDepartment of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138;
Marcin GrabowiczDepartment of Molecular Biology, Princeton University, Princeton, NJ, 08544;
Luisa S GronenbergDepartment of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138;
Holly A SutterlinDepartment of Molecular Biology, Princeton University, Princeton, NJ, 08544;
Rebecca M DavisDepartment of Microbiology, The Ohio State University, Columbus, OH 43210;
Natividad RuizDepartment of Microbiology, The Ohio State University, Columbus, OH 43210; ruiz.82@osu.edu tsilhavy@princeton.edu kahne@chemistry.harvard.edu.
Thomas J SilhavyDepartment of Molecular Biology, Princeton University, Princeton, NJ, 08544; ruiz.82@osu.edu tsilhavy@princeton.edu kahne@chemistry.harvard.edu.
Daniel E KahneDepartment of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138; Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA 02138; Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115 ruiz.82@osu.edu tsilhavy@princeton.edu kahne@chemistry.harvard.edu.

Funding

Training in Molecular, Cellular, and Chemical BiologyT32GM007598 · NIGMS · HARVARD UNIVERSITY · PI DULAC, CATHERINE · 1985 to 2019
$16.2M
Outer Membrane Biogenesis: New Antibiotic TargetsR01AI081059 · NIAID · HARVARD UNIVERSITY · PI Daniel Kahne · 2009 to 2026
$9.5M
Biogenesis and maintenance of the outer membrane of Gram-negative bacteriaR35GM118024 · NIGMS · PRINCETON UNIVERSITY · PI SILHAVY, THOMAS J. · 2016 to 2025
$8.1M
GENETIC ANALYSIS OF PROTEIN EXPORTR37GM034821 · NIGMS · PRINCETON UNIVERSITY · PI SILHAVY, THOMAS J. · 1999 to 2008
$4.9M
GENETIC ANALYSIS OF PROTEIN EXPORTR01GM034821 · NIGMS · PRINCETON UNIVERSITY · PI SILHAVY, THOMAS J. · 1985 to 2015
$4.7M
Envelope Biogenesis in Gram-negative BacteriaR01GM100951 · NIGMS · OHIO STATE UNIVERSITY · PI RUIZ, NATIVIDAD · 2012 to 2023
$3.7M
Substrate Recognition by the Bam ComplexF32GM108258 · NIGMS · HARVARD UNIVERSITY · PI WZOREK, JOSEPH · 2014 to 2015
$106k
Mapping the pathway of membrane β-barrel protein folding by the Bam complex.F31GM116210 · NIGMS · HARVARD UNIVERSITY · PI LEE, JAMES · 2016 to 2017
$63k
NIAID NIH HHS R01 AI081059NIGMS NIH HHS F31 GM116210NIGMS NIH HHS F32 GM108258NIGMS NIH HHS R01 GM034821NIGMS NIH HHS R01 GM100951NIGMS NIH HHS R35 GM118024NIGMS NIH HHS R37 GM034821NIGMS NIH HHS T32 GM007598
6 · The paper itself

Abstract

The assembly of β-barrel proteins into membranes is mediated by an evolutionarily conserved machine. This process is poorly understood because no stable partially folded barrel substrates have been characterized. Here, we slowed the folding of the Escherichia coli β-barrel protein, LptD, with its lipoprotein plug, LptE. We identified a late-stage intermediate in which LptD is folded around LptE, and both components interact with the two essential β-barrel assembly machine (Bam) components, BamA and BamD. We propose a model in which BamA and BamD act in concert to catalyze folding, with the final step in the process involving closure of the ends of the barrel with release from the Bam components. Because BamD and LptE are both soluble proteins, the simplest model consistent with these findings is that barrel folding by the Bam complex begins in the periplasm at the membrane interface.

Indexed as

Bacterial Outer Membrane ProteinsEscherichia coliEscherichia coli ProteinsModels, MolecularProtein BindingProtein ConformationProtein FoldingBacterial Outer Membrane ProteinsBamA protein, E coliBamD protein, E coliEscherichia coli ProteinsLptD protein, E coliLptE protein, E coliBam complexouter membraneprotein foldingβ-barrel

Identifiers

PMID27439868
PMCPMC4978274

What OpenQuestion holds

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Registered trials

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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.