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Updated: Apr 30, 2026

Preparation of Synaptic Plasma Membrane and Postsynaptic Density Proteins Using a Discontinuous Sucrose Gradient

Preparation of Synaptic Plasma Membrane and Postsynaptic Density Proteins Using a Discontinuous Sucrose Gradient

Published on: September 3, 2014

CSPα-chaperoning presynaptic proteins.

Julien Donnelier¹, Janice E A Braun¹

¹Department of Physiology and Pharmacology, The Hotchkiss Brain Institute, Faculty of Medicine, University of Calgary Calgary, AB, Canada.

Frontiers in Cellular Neuroscience

|May 9, 2014

Summary

This summary is machine-generated.

Synaptic chaperones like Cysteine string protein alpha (CSPα) maintain synapse health by regulating protein function and preventing neurodegeneration. Understanding CSPα

Keywords:

CSP DnaJC5 J protein chaperones cysteine string protein neural differentiation neurodegeneration

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Area of Science:

Neuroscience
Molecular Biology
Cell Biology

Background:

Synaptic transmission depends on rapid protein interactions, but synapse maintenance mechanisms are not fully understood.
Synaptic chaperones, such as Cysteine string protein alpha (CSPα), are crucial for maintaining proteostasis and preventing neurodegenerative diseases.
CSPα is a presynaptic vesicle protein that plays a key role in preventing synaptic loss.

Purpose of the Study:

To review the known client proteins and synaptic complexes influenced by CSPα.
To highlight the role of CSPα in regulating protein conformation and function at the synapse.
To identify current knowledge gaps regarding CSPα's function in synaptic maintenance.

Main Methods:

Literature review of studies on CSPα function.
Analysis of identified CSPα client proteins, including ion channels and synaptic vesicle cycle proteins.
Discussion of the implications of CSPα in neurodegeneration.

Main Results:

CSPα interacts with and regulates various client proteins, including voltage-dependent ion channels and synaptic vesicle machinery.
These interactions are critical for maintaining synaptic function and preventing neurodegeneration.
A growing list of CSPα substrates highlights its broad impact on synaptic proteostasis.

Conclusions:

CSPα is a vital molecular chaperone for synaptic health, regulating key proteins involved in synaptic transmission and vesicle cycling.
Dysfunction or loss of CSPα contributes to neurodegenerative processes.
Further research is needed to fully elucidate the mechanisms by which CSPα maintains synaptic integrity and to explore therapeutic strategies targeting CSPα.