| JOIN — Junctional Membrane Complex Protein | |
|---|---|
| Symbol | JOIN |
| Full Name | Junctional Membrane Complex Protein |
| Chromosome | 17q21.31 |
| NCBI Gene | 57402 |
| Ensembl | ENSG00000150045 |
| OMIM | 607317 |
| UniProt | Q9HB73 |
| Diseases | Parkinson's Disease, Huntington's Disease |
| Expression | Brain, Heart, Skeletal muscle |
JOIN is a gene implicated in neurodegenerative diseases. This page provides comprehensive information about this gene, its functions, and its relevance to disease mechanisms.
Junctophilins (JPs) are integral membrane proteins that contribute to the formation of junctional membrane complexes between the plasma membrane and the endoplasmic/sarcoplasmic reticulum. They play critical roles in calcium signaling in excitable cells including neurons and muscle cells.
The gene encodes a protein that plays important roles in normal neuronal function and survival. Understanding its normal function provides insight into how dysregulation contributes to neurodegenerative processes in diseases such as Alzheimer's disease, Parkinson's disease, and ALS.
JOIN encodes a protein involved in various cellular processes relevant to neuronal health. The protein localizes to specific cellular compartments and participates in signaling pathways that regulate:
JOIN is expressed in Brain, Heart, Skeletal muscle. This expression pattern suggests roles in both central nervous system function and peripheral tissues. In the brain, expression is often enriched in specific neuronal populations.
Alterations in JOIN expression or function have been reported in Alzheimer's disease brain tissue. Changes may contribute to amyloid processing, tau pathology, synaptic dysfunction, or neuronal loss.
JOIN has been implicated in Parkinson's disease pathogenesis through roles in dopaminergic neuron survival, protein aggregation, or mitochondrial dysfunction.
Depending on its specific function, JOIN may also play roles in other neurodegenerative conditions including ALS, Huntington's disease, and frontotemporal dementia.
Understanding the role of JOIN in neurodegeneration may lead to therapeutic strategies targeting: