ID 2.7.1.227 DE Inositol phosphorylceramide synthase. CA 1-phosphatidyl-1D-myo-inositol + a very-long-chain (2'R)-2'-hydroxy- CA phytoceramide = 1,2-diacyl-sn-glycerol + a (4R)-4-hydroxy-N-((2R)-2- CA hydroxy-very-long-chain-acyl)-1-O-((1D-myo-inositol-1- CA O-yl)hydroxyphosphoryl)sphinganine. CC -!- The enzyme, characterized from yeast, attaches a phosphoinositol CC headgroup to alpha-hydroxyphytoceramides, generating a very-long- CC chain inositol phospho-alpha hydroxyphytoceramide (IPC), the simplest CC of the three complex sphingolipids produced by yeast. DR P36107, AUR1_YEAST ; Q84WB7, GINT1_ARATH; Q9SH93, IPCS2_ARATH; //