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  • Title: Rabbit muscle gangliosides.
    Author: Lassaga FE, Lassaga IA, Caputto R.
    Journal: J Lipid Res; 1972 Nov; 13(6):810-5. PubMed ID: 4345056.
    Abstract:
    Four ganglioside fractions were isolated from rabbit muscle: one hematoside and three hexosamine-containing species. They were analyzed for hexoses, hexosamine, sialic acid, fatty acids, and long-chain base content. The molar ratios of sphingosine-hexose-hexosamine-sialic acid were: for hematoside, 1:2:0:1; for the disialogangliosides, 1:3:1:2; and for trisialoganglioside, 1:3:1:3. The carbohydrates were studied by thin-layer and paper chromatography. The hexoses were glucose and galactose; the hexosamine was N-acetylgalactosamine and the sialic acid was N-acetylneuraminic acid. Fatty acids and long-chain bases were analyzed by gas-liquid chromatography. The fatty acid composition was similar in all of the four gangliosides. The most abundant fatty acids were 16:0 and 18:0, but significant amounts of 16:1, 18:1, 20:0, and 22:0 were also found. Hydroxy fatty acids were not detected. In all of the muscle gangliosides the main long-chain bases were C(18)-sphingenine and C(20)-sphingenine. In hematoside there were also measurable amounts of C(18)-sphinganine and C(20)-sphinganine, whereas in the major gangliosides only traces of C(18)-sphinganine were detected.
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