(aj Thy-1 protein Cys Mannose Mannose O-CH2-CH2-NH NH2 Mannose CH2 CH2- Mannose-N-acetylgalactosamine 膜蛋白中的糖类 N-acetylglucosamine 0 Inositol H,C CH Exoplasmic face (H2Chz (CH)2 H30 CHa CHa CHa HO Farnesyl CH -CH Palmitate Myristate CH2)14 CH2312 Cytosolic (b) (c) face NH HaC-0- -Lys-Cys Gly Ras protein Ser v-Src protein膜蛋白中的糖类