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Synaptosomal-Associated Protein, 25kDa (SNAP-25)
- Target
- SNAP-25
- Molecular classification
- SNARE, t-SNARE, Q-SNARE
01
Overview
SNAP-25 is a key component of the SNARE complex, which is essential for mediating vesicle fusion with target membranes during exocytosis, particularly neurotransmitter release at synapses. It interacts with synaptobrevin (VAMP2) and syntaxin (STX1A) to form a tight complex that drives membrane fusion. SNAP-25 also regulates synaptic vesicle docking, priming, and triggering. Furthermore, it modulates voltage-gated calcium channels and is involved in postsynaptic processes such as dendritic spine morphogenesis. Dysfunction of SNAP-25 is linked to several neurodevelopmental and neuropsychiatric disorders.
- Other names
- SNAP25
02
Mechanism of action
Currently, there are no drugs that directly target SNAP-25 for therapeutic intervention. However, botulinum toxins indirectly target SNAP-25 by cleaving it and preventing its function.
03
Biological functions
Neurotransmitter release/exocytosisSynaptogenesisNeuronal plasticityPostsynaptic receptor traffickingDendritic spine formation/morphology regulationRegulation of voltage-gated calcium channels
04
Disease associations
ADHDSchizophreniaBipolar disorderEpilepsyAlzheimer's diseaseLearning disabilities
05
Safety considerations
Cleavage by clostridial toxins leads to complete blockage of neurotransmission.
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