Caveolin-3 is a 19 kDa muscle-specific caveolin protein encoded by the CAV3 gene. While similar to caveolin-1 in structure and function, caveolin-3 is primarily expressed in skeletal muscle, cardiac muscle, and smooth muscle cells, where it forms caveolae and regulates muscle-specific signaling pathways. In the nervous system, caveolin-3 is expressed in neurons and has been implicated in neuromuscular junction formation and function.
| Caveolin-3 | |
|---|---|
| Protein Name | Caveolin-3 |
| Gene | CAV3 |
| UniProt ID | P51636 |
| PDB Structures | 1KY3 |
| Molecular Weight | 19 kDa |
| Subcellular Localization | Muscle caveolae, Neuromuscular junction |
| Protein Family | Caveolin family |
Caveolin-3 is the muscle-specific isoform of the caveolin protein family. Unlike caveolin-1 and caveolin-2 which are widely expressed, caveolin-3 expression is largely restricted to muscle tissue. Caveolin-3 forms homo-oligomers that are essential for caveolae formation in muscle cells. Mutations in CAV3 cause several muscle disorders including limb-girdle muscular dystrophy type 1C, rippling muscle disease, and familial hypertrophic cardiomyopathy.
The CAV3 gene encodes caveolin-3, which is essential for proper muscle function. In the nervous system, caveolin-3 is expressed at the neuromuscular junction and in certain neuronal populations. Research has shown that caveolin-3 plays roles in muscle fiber maintenance, neurotransmitter receptor clustering, and neuronal survival. Caveolin-3 mutations and altered expression have been reported in various neuromuscular disorders and may have implications for understanding muscle weakness in neurodegenerative diseases.
Caveolin-3 is a 19 kDa protein belonging to the Caveolin family.
Caveolin-3 is a muscle-specific scaffolding protein that forms caveolae and modulates signal transduction in muscle cells. It is essential for neuromuscular junction organization.
Caveolin-3 in disease:
Mutations cause limb-girdle muscular dystrophy 1C
Associated with rippling muscle disease
Links to cardiac hypertrophy
Muscular Dystrophy, Cardiomyopathy
Further research is needed to identify key publications for this protein.