Potocytosis is a type of receptor-mediated endocytosis in which small molecules are transported across the plasma membrane of a cell.
The molecules are transported by caveolae (rather than clathrin-coated vesicles) and are deposited directly into the cytosol.
They are enriched in cholesterol and sphingolipids and are involved potocytosis as the lateral compartmentalization of molecules.
Caveolae are caveolin-1-enriched smooth invaginations found on these lipid rafts that contribute to transportation of molecules.
Glycosylphosphatidylinositol-anchored class of membrane proteins generate high concentrations of molecules.