Evidence map›Paper›PMID 18094056›Full record

ArticleMolecular biology of the cell2008

A novel site of action for alpha-SNAP in the SNARE conformational cycle controlling membrane fusion.

Marcin Barszczewski, John J Chua, Alexander Stein, Ulrike Winter, Rainer Heintzmann, Felipe E Zilly, Dirk Fasshauer, Thorsten Lang, Reinhard Jahn

Open access · greenAbstract read
In one paragraph

Article in Molecular biology of the cell, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed
1.5field-weighted citation impact, top 19% 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

29 citing papers in PubMed, 49 citations in OpenAlex.

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  10. Disease resistance through impairment of α-SNAP-NSF interaction and vesicular trafficking by soybean Rhg1.Proceedings of the National Academy of Sciences of the United States of America · 2016
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  16. Controlling synaptotagmin activity by electrostatic screening.Nature structural & molecular biology · 2012
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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

9 authors at 1 institution in 1 country.

Marcin BarszczewskiDepartment of Neurobiology, Max-Planck-Institute for Biophysical Chemistry, 37077 Göttingen, Germany.
John J Chua
Alexander Stein
Ulrike Winter
Rainer Heintzmann
Felipe E Zilly
Dirk Fasshauer
Thorsten Lang
Reinhard Jahn
Max Planck Institute for Biophysical Chemistry · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Regulated exocytosis in neurons and neuroendocrine cells requires the formation of a stable soluble N-ethylmaleimide-sensitive factor attachment protein receptor (SNARE) complex consisting of synaptobrevin-2/vesicle-associated membrane protein 2, synaptosome-associated protein of 25 kDa (SNAP-25), and syntaxin 1. This complex is subsequently disassembled by the concerted action of alpha-SNAP and the ATPases associated with different cellular activities-ATPase N-ethylmaleimide-sensitive factor (NSF). We report that NSF inhibition causes accumulation of alpha-SNAP in clusters on plasma membranes. Clustering is mediated by the binding of alpha-SNAP to uncomplexed syntaxin, because cleavage of syntaxin with botulinum neurotoxin C1 or competition by using antibodies against syntaxin SNARE motif abolishes clustering. Binding of alpha-SNAP potently inhibits Ca(2+)-dependent exocytosis of secretory granules and SNARE-mediated liposome fusion. Membrane clustering and inhibition of both exocytosis and liposome fusion are counteracted by NSF but not when an alpha-SNAP mutant defective in NSF activation is used. We conclude that alpha-SNAP inhibits exocytosis by binding to the syntaxin SNARE motif and in turn prevents SNARE assembly, revealing an unexpected site of action for alpha-SNAP in the SNARE cycle that drives exocytotic membrane fusion.

Indexed as

Membrane FusionAmino Acid MotifsAnimalsBinding SitesCalciumCell-Free SystemCell MembraneExocytosisHumansModels, BiologicalN-Ethylmaleimide-Sensitive ProteinsPC12 CellsProtein ConformationProtein TransportRatsSecretory VesiclesCalciumN-Ethylmaleimide-Sensitive ProteinsSNARE ProteinsSoluble N-Ethylmaleimide-Sensitive Factor Attachment ProteinsSyntaxin 1

Identifiers

PMID18094056
PMCPMC2262999
OpenAlexW2161358208

What OpenQuestion holds

Textmetadata
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.