Glycosylation of myelin glycoproteins in peripheral nerve via lipid intermediates. 1981

K Uyemura, and K Horie, and M Suzuki, and K Kitamura

Membrane preparations from chick peripheral nervous system (PNS) catalyzed the transfer of [3H]glucose from UDP-[3H]glucose into glucosylphosphoryl dolichol. The initial rate of glucosylphophoryl dolichol formation in a non-myelin membrane fraction from actively myelinating chick PNS was 11 fold higher than that from adult. Exogenous dolichyl monophosphate stimulated glucosylphosphoryl dolichol synthesis in both fractions. The higher level of glucosylphosphoryl dolichol synthesis corresponded to the onset of myelination in chick PNS. Exogenous dolichyl monophosphate also stimulated the labeling of glucosylated oligosaccharide lipids and glycoproteins in the fraction. On SDS polyacrylamide gel electrophoresis, the relative mobility of the major and minor radioactive glycoprotein corresponded with that of the P0 and PASII glycoprotein in PNS myelin, respectively. The results suggest that myelin glycoproteins in PNS are glycosylated via lipid intermediates.

UI MeSH Term Description Entries
D008566 Membranes Thin layers of tissue which cover parts of the body, separate adjacent cavities, or connect adjacent structures. Membrane Tissue,Membrane,Membrane Tissues,Tissue, Membrane,Tissues, Membrane
D009186 Myelin Sheath The lipid-rich sheath surrounding AXONS in both the CENTRAL NERVOUS SYSTEMS and PERIPHERAL NERVOUS SYSTEM. The myelin sheath is an electrical insulator and allows faster and more energetically efficient conduction of impulses. The sheath is formed by the cell membranes of glial cells (SCHWANN CELLS in the peripheral and OLIGODENDROGLIA in the central nervous system). Deterioration of the sheath in DEMYELINATING DISEASES is a serious clinical problem. Myelin,Myelin Sheaths,Sheath, Myelin,Sheaths, Myelin
D009844 Oligosaccharides Carbohydrates consisting of between two (DISACCHARIDES) and ten MONOSACCHARIDES connected by either an alpha- or beta-glycosidic link. They are found throughout nature in both the free and bound form. Oligosaccharide
D011103 Polyisoprenyl Phosphate Monosaccharides These compounds function as activated monosaccharide carriers in the biosynthesis of glycoproteins and oligosaccharide phospholipids. Obtained from a nucleoside diphosphate sugar and a polyisoprenyl phosphate. Isoprenoid Phosphate Monosaccharides,Monosaccharides, Isoprenoid Phosphate,Monosaccharides, Polyisoprenyl Phosphate,Phosphate Monosaccharides, Isoprenoid,Phosphate Monosaccharides, Polyisoprenyl
D011105 Polyisoprenyl Phosphate Sugars Compounds functioning as activated glycosyl carriers in the biosynthesis of glycoproteins and glycophospholipids. They include the polyisoprenyl pyrophosphates. Isoprenoid Phosphate Sugars,Sugar Pyrophosphorylpolyprenols,Phosphate Sugars, Isoprenoid,Phosphate Sugars, Polyisoprenyl,Pyrophosphorylpolyprenols, Sugar,Sugars, Isoprenoid Phosphate,Sugars, Polyisoprenyl Phosphate
D002642 Chick Embryo The developmental entity of a fertilized chicken egg (ZYGOTE). The developmental process begins about 24 h before the egg is laid at the BLASTODISC, a small whitish spot on the surface of the EGG YOLK. After 21 days of incubation, the embryo is fully developed before hatching. Embryo, Chick,Chick Embryos,Embryos, Chick
D002645 Chickens Common name for the species Gallus gallus, the domestic fowl, in the family Phasianidae, order GALLIFORMES. It is descended from the red jungle fowl of SOUTHEAST ASIA. Gallus gallus,Gallus domesticus,Gallus gallus domesticus,Chicken
D006020 Glycopeptides Proteins which contain carbohydrate groups attached covalently to the polypeptide chain. The protein moiety is the predominant group with the carbohydrate making up only a small percentage of the total weight. Glycopeptide
D006023 Glycoproteins Conjugated protein-carbohydrate compounds including MUCINS; mucoid, and AMYLOID glycoproteins. C-Glycosylated Proteins,Glycosylated Protein,Glycosylated Proteins,N-Glycosylated Proteins,O-Glycosylated Proteins,Glycoprotein,Neoglycoproteins,Protein, Glycosylated,Proteins, C-Glycosylated,Proteins, Glycosylated,Proteins, N-Glycosylated,Proteins, O-Glycosylated
D000375 Aging The gradual irreversible changes in structure and function of an organism that occur as a result of the passage of time. Senescence,Aging, Biological,Biological Aging

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