Evidence map›Paper›PMID 25219853›Full record

ArticleNature2014

Structural and mechanistic insights into the bacterial amyloid secretion channel CsgG.

Parveen Goyal, Petya V Krasteva, Nani Van Gerven, Francesca Gubellini, Imke Van den Broeck, Anastassia Troupiotis-Tsaïlaki, Wim Jonckheere, Gérard Péhau-Arnaudet, Jerome S Pinkner, Matthew R Chapman and 4 more

Abstract read
In one paragraph

Article in Nature, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 152 papers.

0numbers the graph read from it
0cells of the map it votes in
152citing papers in PubMed
17.0field-weighted citation impact, top 1% 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

152 citing papers in PubMed, 311 citations in OpenAlex.

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  13. Programming cellular condensates for living materials using an intrinsically disordered protein display platform.Proceedings of the National Academy of Sciences of the United States of America · 2025
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92 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

14 authors at 7 institutions in 4 countries.

Parveen Goyal1] Structural and Molecular Microbiology, Structural Biology Research Center, VIB, Pleinlaan 2, 1050 Brussels, Belgium [2] Structural Biology Brussels, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium.
Petya V Krasteva1] Unité G5 Biologie structurale de la sécrétion bactérienne, Institut Pasteur, 25-28 rue du Docteur Roux, 75015 Paris, France [2] UMR 3528, CNRS, Institut Pasteur, 25-28 rue du Docteur Roux, 75015 Paris, France.
Nani Van Gerven1] Structural and Molecular Microbiology, Structural Biology Research Center, VIB, Pleinlaan 2, 1050 Brussels, Belgium [2] Structural Biology Brussels, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium.
Francesca Gubellini1] Unité G5 Biologie structurale de la sécrétion bactérienne, Institut Pasteur, 25-28 rue du Docteur Roux, 75015 Paris, France [2] UMR 3528, CNRS, Institut Pasteur, 25-28 rue du Docteur Roux, 75015 Paris, France.
Imke Van den Broeck1] Structural and Molecular Microbiology, Structural Biology Research Center, VIB, Pleinlaan 2, 1050 Brussels, Belgium [2] Structural Biology Brussels, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium.
Anastassia Troupiotis-TsaïlakiStructure et Fonction des Membranes Biologiques (SFMB), Université Libre de Bruxelles, 1050 Brussels, Belgium.
Wim Jonckheere1] Structural and Molecular Microbiology, Structural Biology Research Center, VIB, Pleinlaan 2, 1050 Brussels, Belgium [2] Structural Biology Brussels, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium.
Gérard Péhau-ArnaudetUMR 3528, CNRS, Institut Pasteur, 25-28 rue du Docteur Roux, 75015 Paris, France.
Jerome S PinknerDepartment of Molecular Microbiology and Microbial Pathogenesis, Washington University in Saint Louis School of Medicine, St Louis, Missouri 63110-1010, USA.
Matthew R ChapmanDepartment of Molecular, Cellular and Developmental Biology, University of Michigan, Ann Arbor, Michigan 48109-1048, USA.
Scott J HultgrenDepartment of Molecular Microbiology and Microbial Pathogenesis, Washington University in Saint Louis School of Medicine, St Louis, Missouri 63110-1010, USA.
Stefan HoworkaDepartment of Chemistry, Institute for Structural and Molecular Biology, University College London, London WC1H 0AJ, UK.
Rémi Fronzes1] Unité G5 Biologie structurale de la sécrétion bactérienne, Institut Pasteur, 25-28 rue du Docteur Roux, 75015 Paris, France [2] UMR 3528, CNRS, Institut Pasteur, 25-28 rue du Docteur Roux, 75015 Paris, France.
Han Remaut1] Structural and Molecular Microbiology, Structural Biology Research Center, VIB, Pleinlaan 2, 1050 Brussels, Belgium [2] Structural Biology Brussels, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium.
Institut Pasteur · FRVrije Universiteit Brussel · BEVIB-VUB Center for Structural Biology · BEWashington University in St. Louis · USInstitute of Structural and Molecular Biology · GBUniversité Libre de Bruxelles · BEUniversity of Michigan · US

Funding

PATHOGENIC FIBER FORMATION IN BACTERIA: STRUCTURAL BASISR01AI048689 · NIAID · WASHINGTON UNIVERSITY · PI HULTGREN, SCOTT J. · 2001 to 2020
$7.6M
Pathogenic Fiber Formation in Bacteria: Structural BasisR37AI048689 · NIAID · WASHINGTON UNIVERSITY · PI SCOTT J. HULTGREN · 2021 to 2026
$2.9M
BIOGENESIS AND INHIBITION OF BIOFILM-ASSOCIATED BACTERIAL AMYLOIDR01AI099099 · NIAID · WASHINGTON UNIVERSITY · PI FRIEDEN, CARL, HULTGREN, SCOTT J. · 2013 to 2017
$1.9M
Assembly of Curli Fibers by Escherichia coliR01AI073847 · NIAID · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI CHAPMAN, MATTHEW RICHARD · 2007 to 2011
$1.8M
Curli Fiber Assembly and FunctionR56AI073847 · NIAID · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI CHAPMAN, MATTHEW RICHARD · 2013 to 2013
$352k
NIAID NIH HHS R01 AI048689NIAID NIH HHS R01 AI073847NIAID NIH HHS R01 AI099099NIAID NIH HHS R37 AI048689NIAID NIH HHS R56 AI073847PHS HHS R01 A1073847
6 · The paper itself

Abstract

Curli are functional amyloid fibres that constitute the major protein component of the extracellular matrix in pellicle biofilms formed by Bacteroidetes and Proteobacteria (predominantly of the α and γ classes). They provide a fitness advantage in pathogenic strains and induce a strong pro-inflammatory response during bacteraemia. Curli formation requires a dedicated protein secretion machinery comprising the outer membrane lipoprotein CsgG and two soluble accessory proteins, CsgE and CsgF. Here we report the X-ray structure of Escherichia coli CsgG in a non-lipidated, soluble form as well as in its native membrane-extracted conformation. CsgG forms an oligomeric transport complex composed of nine anticodon-binding-domain-like units that give rise to a 36-stranded β-barrel that traverses the bilayer and is connected to a cage-like vestibule in the periplasm. The transmembrane and periplasmic domains are separated by a 0.9-nm channel constriction composed of three stacked concentric phenylalanine, asparagine and tyrosine rings that may guide the extended polypeptide substrate through the secretion pore. The specificity factor CsgE forms a nonameric adaptor that binds and closes off the periplasmic face of the secretion channel, creating a 24,000 Å(3) pre-constriction chamber. Our structural, functional and electrophysiological analyses imply that CsgG is an ungated, non-selective protein secretion channel that is expected to employ a diffusion-based, entropy-driven transport mechanism.

Indexed as

AmyloidBiofilmsCell MembraneCrystallography, X-RayDiffusionEntropyEscherichia coliEscherichia coli ProteinsLipoproteinsMembrane Transport ProteinsModels, BiologicalModels, MolecularPeriplasmProtein ConformationProtein TransportAmyloidCsgE protein, E coliCsgG protein, E coliEscherichia coli ProteinsLipoproteinsMembrane Transport Proteins

Identifiers

PMID25219853
PMCPMC4268158
OpenAlexW2020097975

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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.