Evidence map›Paper›PMID 21151134›Full record

ArticleNature cell biology2011

CSPα promotes SNARE-complex assembly by chaperoning SNAP-25 during synaptic activity.

Manu Sharma, Jacqueline Burré, Thomas C Südhof

Erratum issuedAbstract read
PubMed Publisher
In one paragraph

Article in Nature cell biology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 146 papers.

0numbers the graph read from it
0cells of the map it votes in
146citing papers in PubMed
8.0field-weighted citation impact, top 2% 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

146 citing papers in PubMed, 231 citations in OpenAlex.

  1. Review
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  11. Decoding transcriptomic signatures of cysteine string protein alpha-mediated synapse maintenance.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  12. Review
  13. A hydrophobic groove in secretagogin allows for alternate interactions with SNAP-25 and syntaxin-4 in endocrine tissues.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
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  18. CNature communications · 2023
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86 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

3 authors at 2 institutions in 1 country.

Manu SharmaDepartment of Molecular and Cellular Physiology, Stanford University, SIM1, 265 Campus Drive, Palo Alto, CA 94304-5453, USA. sharma11@stanford.edu
Jacqueline Burré
Thomas C Südhof
Cellular Research (United States) · USStanford University · US

Funding

Neurodegeneration and Synaptic Transmission in AgingRC2AG036614 · NIA · BRIGHAM AND WOMEN'S HOSPITAL · PI SHEN, JIE · 2009 to 2010
$1.3M
Howard Hughes Medical InstituteNIA NIH HHS RC2AG036614
6 · The paper itself

Abstract

A neuron forms thousands of presynaptic nerve terminals on its axons, far removed from the cell body. The protein CSPα resides in presynaptic terminals, where it forms a chaperone complex with Hsc70 and SGT. Deletion of CSPα results in massive neurodegeneration that impairs survival in mice and flies. In CSPα-knockout mice, levels of presynaptic SNARE complexes and the SNARE protein SNAP-25 are reduced, suggesting that CSPα may chaperone SNARE proteins, which catalyse synaptic vesicle fusion. Here, we show that the CSPα-Hsc70-SGT complex binds directly to monomeric SNAP-25 to prevent its aggregation, enabling SNARE-complex formation. Deletion of CSPα produces an abnormal SNAP-25 conformer that inhibits SNARE-complex formation, and is subject to ubiquitylation and proteasomal degradation. Even in wild-type mouse terminals, SNAP-25 degradation is regulated by synaptic activity; this degradation is decreased by CSPα overexpression, and enhanced by CSPα deletion. Thus, SNAP-25 function is maintained during rapid SNARE cycles by equilibrium between CSPα-dependent chaperoning and ubiquitin-dependent degradation, revealing unique protein quality-control machinery within the presynaptic compartment.

Indexed as

alpha-SynucleinAnimalsAnimals, NewbornBrainCells, CulturedFemaleHEK293 CellsHSC70 Heat-Shock ProteinsHSP40 Heat-Shock ProteinsHumansImmunoblottingMaleMembrane ProteinsMiceMice, KnockoutMice, Transgenicalpha-Synucleincysteine string proteinHSC70 Heat-Shock ProteinsHSP40 Heat-Shock ProteinsHspa8 protein, mouseMembrane ProteinsMolecular ChaperonesProteasome Endopeptidase ComplexSnap25 protein, mouseSNARE ProteinsSynaptosomal-Associated Protein 25

Identifiers

PMID21151134
OpenAlexW2113104319

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.