Evidence map›Paper›PMID 11463334›Full record

ArticleThe Biochemical journal2001

Cysteine residues of SNAP-25 are required for SNARE disassembly and exocytosis, but not for membrane targeting.

P Washbourne, V Cansino, J R Mathews, M Graham, R D Burgoyne, M C Wilson

Open access · bronzeAbstract read
In one paragraph

Article in The Biochemical journal, 2001. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed
3.1field-weighted citation impact, top 9% 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

42 citing papers in PubMed, 94 citations in OpenAlex.

  1. Trial
  2. Review
  3. Article
  4. Lipids and Secretory Vesicle Exocytosis.Advances in neurobiology · 2023
    Article
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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

6 authors at 2 institutions in 2 countries.

P WashbourneDepartment of Neurosciences, University of New Mexico, 915 Camino de Salud, Albuquerque, NM 87131, USA.
V Cansino
J R Mathews
M Graham
R D Burgoyne
M C Wilson
University of New Mexico · USUniversity of Liverpool · GB

Funding

SNAP-25 EXPRESSION AND HYPERACTIVITY IN COLOBOMA MICER01MH048989 · NIMH · UNIVERSITY OF NEW MEXICO · PI WILSON, MICHAEL COLIN · 1992 to 2008
$2.7M
NIMH NIH HHS MH48989NIMH NIH HHS R01 MH048989
6 · The paper itself

Abstract

The release of neurotransmitter at a synapse occurs via the regulated fusion of synaptic vesicles with the plasma membrane. The fusion of the two lipid bilayers is mediated by a protein complex that includes the plasma membrane target soluble N-ethylmaleimide-sensitive fusion protein (NSF) attachment protein (SNAP) receptors (t-SNAREs), syntaxin 1A and synaptosome-associated protein of 25 kDa (SNAP-25), and the vesicle SNARE (v-SNARE), vesicle-associated membrane protein (VAMP). Whereas syntaxin 1A and VAMP are tethered to the membrane by a C-terminal transmembrane domain, SNAP-25 has been suggested to be anchored to the membrane via four palmitoylated cysteine residues. We demonstrate that the cysteine residues of SNAP-25 are not required for membrane localization when syntaxin 1A is present. Analysis of the 7 S and 20 S complexes formed by mutants that lack cysteine residues demonstrates that the cysteines are required for efficient SNARE complex dissociation. Furthermore, these mutants are unable to support exocytosis, as demonstrated by a PC12 cell secretion assay. We hypothesize that syntaxin 1A serves to direct newly synthesized SNAP-25 through the Golgi transport pathway to the axons and synapses, and that palmitoylation of cysteine residues is not required for targeting, but to optimize interactions required for SNARE complex dissociation.

Indexed as

Vesicular Transport ProteinsAnimalsAntigens, SurfaceCarrier ProteinsCells, CulturedCricetinaeCysteineDose-Response Relationship, DrugEscherichia coliExocytosisMembrane ProteinsNerve Tissue ProteinsPC12 CellsProtein Structure, TertiaryRatsSNARE ProteinsAntigens, SurfaceCarrier ProteinsCysteineMembrane ProteinsNerve Tissue ProteinsSnap25 protein, ratSNARE ProteinsStx1a protein, ratSynaptosomal-Associated Protein 25Syntaxin 1VAPP14 protein, ratVesicular Transport Proteins

Identifiers

PMID11463334
PMCPMC1221993
OpenAlexW1968924577

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.