Ppp1R9A Gene is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
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| Gene Symbol | PPP1R9A |
| Full Name | Protein Phosphatase 1 Regulatory Subunit 9A |
| Chromosomal Location | 7q21.3 |
| NCBI Gene ID | 55697 |
| OMIM | 602321 |
| Ensembl ID | ENSG00000116489 |
| UniProt ID | Q9Y5X4 |
PPP1R9A (Protein Phosphatase 1 Regulatory Subunit 9A), also known as Neurabin-1, is a neuron-specific regulatory protein that plays critical roles in synaptic plasticity, dendritic spine morphogenesis, and learning and memory. It is a key scaffold protein that localizes protein phosphatase 1 to synaptic sites.
PPP1R9A localizes protein phosphatase 1 (PP1) to synapses:
- Binds to PP1 through RVXF motif
- Targets PP1 to postsynaptic densities
- Regulates synaptic phosphoprotein signaling
Neurabin-1 is essential for dendritic spine development:
- Interacts with actin cytoskeleton
- Regulates spine formation and maintenance
- Affects synaptic connectivity
Neurabin-1 modulates synaptic plasticity:
- Regulates AMPA receptor trafficking
- Affects long-term potentiation (LTP)
- Influences learning and memory formation
- PP1-mediated dephosphorylation of synaptic substrates
- Actin cytoskeleton regulation
- Interaction with NMDA and AMPA receptors
PPP1R9A expression:
- Neuron-specific: Exclusively expressed in neurons
- High in brain: Particularly abundant in the cerebral cortex and hippocampus
- Postsynaptic localization: Concentrated in dendritic spines
PPP1R9A is associated with autism spectrum disorder:
- Mutations linked to ASD susceptibility
- Role in synaptic dysfunction in ASD
- Potential therapeutic target
In intellectual disability:
- Copy number variations involving PPP1R9A
- Impact on cognitive function
- Synaptic signaling alterations
Potential roles in Alzheimer's disease:
- Synaptic protein phosphatase dysregulation
- Memory consolidation mechanisms
- Potential therapeutic implications
In Parkinson's disease:
- Synaptic dysfunction in dopaminergic pathways
- Potential role in synaptic maintenance
PPP1R9A is used in research for:
- Studying synaptic plasticity mechanisms
- Dendritic spine analysis
- PP1 signaling pathways in neurons
The study of Ppp1R9A Gene 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.
- Oliver et al. (2002). Neurabin: a synapse-specific PP1 regulator. Nature.
- Feng et al. (2000). Neurabin in spine development. J Neurosci.
- Zhou et al. (2019). PPP1R9A and neuropsychiatric disorders. Mol Psychiatry.
- Benned-Jensen & Smith (2013). Neurabin regulation of synaptic function. J Neurochem.
- Wang et al. (2017). Role of PPP1R9A in neurodevelopment. Dev Neurobiol.