Lipid composition of rafts Sphingolipid(glycosphingolipids sphingomyelin) and cholsterol sphingomyelin- and cholsterol-rich DIGs can also be isolated from cells glycosphingolipids are not absolutely required DIGS in trans-Golgi-network: rich in cholesterol and anchored by gpi proteinLipid composition of rafts Sphingolipid (glycosphingolipids, sphingomyelin) and cholsterol sphingomyelin- and cholsterol-rich DIGs can also be isolated from cells. glycosphingolipids are not absolutely required! DIGs in trans-Golgi-network: rich in cholesterol and anchored by GPI protein!