Pathways of sphingolipid and glycerophospholipid metabolism in S. cerevisiae. DG, diacylglycerol; PS, phosphatidylserine; PE, phosphatidylethanolamine; PC, phosphatidylcholine; PI, phosphatidylinositol; KDS, ketodihydrosphingosine; DHS, dihydrosphingosine; PHS, phytosphingosine; IPC, inositol phosphorylceramide; MIPC, mannose inositol phosphorylceramide; and M(IP)2C, mannose diinositol diphosphorylceramide.