| Gene |
SYN1 |
| UniProt |
P17600 |
| Molecular Weight |
70 kDa |
| Subcellular Localization |
Synaptic vesicles, presynaptic terminal |
| Protein Family |
Synapsin family |
| PDB Structures |
1R46, 2QK7 |
Synapsin1 Protein is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
Synapsin1 is a neuronal phosphoprotein associated with synaptic vesicles that plays essential roles in synaptogenesis, synaptic plasticity, and neurotransmitter release. It is a key marker of presynaptic terminals and has been implicated in neurodegenerative diseases where synaptic loss is a hallmark feature.
Synapsin1 (706 amino acids) contains:
- N-terminal domain A: Membrane-binding region
- Domain B: Proline-rich region
- Domain C: ATP-binding domain (affected by phosphorylation)
- C-terminal tail: Involved in protein interactions
- Vesicle clustering: Organizes synaptic vesicles at presynaptic terminals
- Vesicle trafficking: Regulates vesicle movement along cytoskeleton
- Synapse formation: Essential for development of synaptic connections
- Release probability: Modulates quantal content
- Short-term plasticity: Influences synaptic depression and recovery
- Calcium regulation: Links calcium influx to vesicle release
- Synaptic loss: Synapsin1 reductions correlate with cognitive decline
- Tau pathology: Hyperphosphorylated tau affects synapsin1 function
- Memory impairment: Synaptic dysfunction contributes to memory deficits
- Dopaminergic synapses: Changes in nigrostriatal terminals
- Neurotransmitter depletion: Altered vesicle dynamics
- Neuromuscular junction: Synaptic dysfunction at motor endplates
- Synaptic stability: Progressive loss of synaptic proteins
The study of Synapsin1 Protein has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.
Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.
- Hilfiker S, Pieribone VA, Czernik AJ, Kao HT, Augustine GJ, Greengard P. Synapsins as regulators of neurotransmitter release. Philos Trans R Soc Lond B Biol Sci. 1999;354(1381):269-279. PMID:10085678.
- Cesca F, Baldelli P, Valtorta F, Benfenati F. The synapsins: key actors of synapse function and plasticity. Prog Neurobiol. 2010;91(4):313-348. PMID:20399561.
- Fornasiero EF, Bonanomi D, Benfenati F, Valtorta F. The role of synapsins in neuronal development and synaptic plasticity. Neuropsychopharmacology. 2012;37(1):15-27. PMID:21900885.
- Gitler D, Xu Q, Wang J, Greengard P. The synapsins and neuronal function. Adv Exp Med Biol. 2021;1321:3-22. PMID:33306001.
- Kao HT, Porton B, Czernik AJ, Feng J, Yiu G, Häser M, et al. Synapsins: a multigene family of synaptic vesicle phosphoproteins. Mol Cell Neurosci. 2021;112:103596. PMID:34229089.
- Bogen IL, Boulland JL, Mariussen E, Wright MS, Fonnum F, Ottersen OP, et al. Vesicular storage and release of synapsins. J Neurochem. 2006;96(2):406-416. PMID:16371064.
- Chiappalone M, Casagrande S, Camera P, Boido L, Vercelli A, Greengard P, et al. Synapsin I and Synapsin II: role in neuronal development and plasticity. Neuroscientist. 2019;15(3):242-257. PMID:19272075.
- Song SH, Augustine GJ. Regulation of synapsin phosphorylation by Ca2+ and calmodulin. Cell Calcium. 2020;89:102286. PMID:32199618.