The ganglioside content of hog skeletal muscle was 27 nmol/g wet weight when calculated as lipid-bound sialic acid. The elution profile on DEAE-Sephadex A-25 column chromatography showed that the monosialoganglioside fraction (61% of total lipid-bound sialic acid) contained at least seven major gangliosides and that the disialoganglioside fraction (25%) contained four major ones. These gangliosides were purified by latrobeads column chromatography, and from the results of sugar analysis, specific enzymatic hydrolysis, a permethylation study and CrO3 oxidation, the structures of these gangliosides were determined to be as follows: A, GM3(NeuAc); B, GM3(NeuGc); C, sialosylparagloboside(NeuAc); D sialosylparagloboside (NeuGc); E, GM1(NeuAc); F, GM1(NeuGc); G, sialosyllactosaminylparagloboside(NeuAc) (monosialogangliosides) and H, GD1a(NeuAc, NeuAc); I, GD1a(NeuAc, NeuGc); J, GD1a(NeuGc, NeuGc); K, GD1b(NeuAc, NeuAc) (disialogangliosides), where NeuAc is N-acetylneuraminic acid and NeuGc is N-glycolylneuraminic acid as sialyl groups. The major fatty acids of gangliosides A, D and G were mainly C16:0, but those of the others, E, F, H, J and K, were C16:0, C18:0, C22:0 and C24:0. The long-chain bases were predominantly C18:1 sphingosine in all gangliosides.
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