ID 2.7.1.228 DE mannosyl-inositol-phosphoceramide inositolphosphotransferase. CA an alpha-D-mannosyl-(1<->6)-1D-myo-inositol-1-phospho-N-[(R)-2-hydroxy- CA very-long-chain fatty acyl]-(R)-4-hydroxysphingoid base + a 1,2-diacyl- CA sn-glycero-3-phospho-(1D-myo-inositol) = an alpha-D-mannosyl-6-(1D-myo- CA inositol phospho)-(1<->6)-1D-myo-inositol-1-phospho-N-[(R)-2-hydroxy- CA very-long-chain fatty acyl]-(R)-4-hydroxysphingoid base + a 1,2-diacyl- CA sn-glycerol. CC -!- This enzyme catalyzes the ultimate reaction in the yeast sphingolipid CC biosynthesis pathway. CC -!- It transfers a second phosphoinositol group to mannosyl-inositol- CC phospho-alpha-hydroxyphytoceramide (MIPC), forming the final and most CC abundant yeast sphingolipid, mannosyl-diphosphoinositol-ceramide CC (MIP2C). DR P38954, IPT1_YEAST ; //