Recombinant Human Caveolin-3 protein (GST tag N-Terminus)

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Caveolin-3 also referred to as 'caveolin' 'caveolae' and 'CAV3' is a protein with an approximate mass of 17 kDa. It acts as a structural component of caveolae small invaginations in the plasma membrane. Caveolin-3 is expressed majorly in muscle cells including cardiac skeletal and smooth muscle tissues. As a distinguishing marker for caveolae it plays an essential role in the formation and stabilization of these structures.

Biological function summary

Caveolae perform vital functions in cellular signaling and endocytosis. Caveolin-3 assists in various signaling pathways within muscle cells and interacts with other caveolae markers to facilitate signal transduction. It often forms a complex with other caveolin proteins such as caveolin-1 creating an environment conducive for the embedding of signaling molecules. This protein also modulates the trafficking and function of certain ion channels and receptors impacting muscle physiology.

Pathways

Caveolin-3 significantly influences pathways concerned with muscle function and signal transduction. In particular it involves itself with the nitric oxide (NO) signaling pathway and beta-adrenergic signaling both critical to the contractile functions of muscle tissues. It closely interacts with proteins such as endothelial nitric oxide synthase (eNOS) and components of the G-protein coupled receptor family indicating its pivotal role in mediating physiological responses to stimuli.

Caveolin-3 mutations have been associated with a range of muscle-related disorders including limb-girdle muscular dystrophy and hypertrophic cardiomyopathy. These conditions often arise due to alterations in muscle cell signaling and integrity. Caveolin-3 also shares connections with proteins like dystrophin an important player in maintaining muscle cell structure and its dysfunction can exacerbate these muscular disorders. Understanding these interactions offers insights into potential therapeutic targets for managing related pathologies.