Caveolin is a protein that plays a crucial role in the formation of caveolae, small invaginations in the plasma membrane of many vertebrate cell types. These caveolae are involved in various cellular processes, including signal transduction, lipid regulation, and endocytosis. Caveolin has three isoforms: caveolin-1, caveolin-2, and caveolin-3, which differ in their specific functions and tissue distributions.
