Evidence map›Paper›PMID 23954505›Full record

ArticleStructure (London, England : 1993)2013

Hexamers of the type II secretion ATPase GspE from Vibrio cholerae with increased ATPase activity.

Connie Lu, Stewart Turley, Samuel T Marionni, Young-Jun Park, Kelly K Lee, Marcella Patrick, Ripal Shah, Maria Sandkvist, Matthew F Bush, Wim G J Hol

Open access · bronzeAbstract read
In one paragraph

Article in Structure (London, England : 1993), 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed
5.1field-weighted citation impact, top 4% 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

40 citing papers in PubMed, 70 citations in OpenAlex.

  1. Article
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  5. Mechanism of secretion of TcpF by theProceedings of the National Academy of Sciences of the United States of America · 2023
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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

10 authors at 2 institutions in 1 country.

Connie LuDepartment of Biochemistry, University of Washington, Seattle, WA 98195, USA.
Stewart Turley
Samuel T Marionni
Young-Jun Park
Kelly K Lee
Marcella Patrick
Ripal Shah
Maria Sandkvist
Matthew F Bush
Wim G J Hol
University of Washington · USUniversity of Michigan · US

Funding

STRUCTURAL STUDY OF HEAT-LABILE ENTEROTOXINR01AI034501 · NIAID · UNIVERSITY OF WASHINGTON · PI HOL, WILHELMUS G. J. · 1993 to 2013
$5.4M
Organization and Function of a Type II Secretion ComplexR01AI049294 · NIAID · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI SANDKVIST, MARIA B · 2002 to 2012
$2.9M
Structural Biology of Type II Protein Secretion by Bacterial CellsR56AI034501 · NIAID · UNIVERSITY OF WASHINGTON · PI HOL, WILHELMUS G. J. · 2015 to 2015
$490k
Organization and function of a type II secretion complexR56AI049294 · NIAID · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI SANDKVIST, MARIA B · 2015 to 2015
$393k
NIAID NIH HHS AI34501NIAID NIH HHS AI49294NIAID NIH HHS R01 AI034501NIAID NIH HHS R01 AI049294NIAID NIH HHS R56 AI034501NIAID NIH HHS R56 AI049294
6 · The paper itself

Abstract

The type II secretion system (T2SS), a multiprotein machinery spanning two membranes in Gram-negative bacteria, is responsible for the secretion of folded proteins from the periplasm across the outer membrane. The critical multidomain T2SS assembly ATPase GspE(EpsE) had not been structurally characterized as a hexamer. Here, four hexamers of Vibrio cholerae GspE(EpsE) are obtained when fused to Hcp1 as an assistant hexamer, as shown with native mass spectrometry. The enzymatic activity of the GspE(EpsE)-Hcp1 fusions is ∼20 times higher than that of a GspE(EpsE) monomer, indicating that increasing the local concentration of GspE(EpsE) by the fusion strategy was successful. Crystal structures of GspE(EpsE)-Hcp1 fusions with different linker lengths reveal regular and elongated hexamers of GspE(EpsE) with major differences in domain orientation within subunits, and in subunit assembly. SAXS studies on GspE(EpsE)-Hcp1 fusions suggest that even further variability in GspE(EpsE) hexamer architecture is likely.

Indexed as

Adenosine TriphosphatasesAdenosine TriphosphateAmino Acid SequenceBacterial ProteinsBacterial Secretion SystemsCatalytic DomainCrystallography, X-RayHydrolysisKineticsModels, MolecularProtein Structure, QuaternaryProtein Structure, SecondaryPseudomonas aeruginosaRecombinant Fusion ProteinsScattering, Small AngleVibrio choleraeAdenosine TriphosphatasesAdenosine TriphosphateBacterial ProteinsBacterial Secretion SystemsRecombinant Fusion Proteins

Identifiers

PMID23954505
PMCPMC3775503
OpenAlexW2163915650

What OpenQuestion holds

Textmetadata
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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.