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  • Title: Human meconium gangliosides. Characterization of a novel I-type ganglioside with the NeuAc alpha 2-6Gal structure.
    Author: Taki T, Rokukawa C, Kasama T, Kon K, Ando S, Abe T, Handa S.
    Journal: J Biol Chem; 1992 Jun 15; 267(17):11811-7. PubMed ID: 1601853.
    Abstract:
    Three monosialogangliosides containing the NeuAc alpha 2-6Gal structure have been detected in human meconium by immunological analysis using a monoclonal antibody, MSG-15, and purified by repeated silica beads column chromatography. One was previously shown to be NeuAc alpha 2-6Gal beta 1-4GlcNAc beta 1-3Gal beta 1-4Glc beta 1-1Cer. The remaining two were characterized by proton NMR, fast atom bombardment mass spectrometry, methylation analysis by gas chromatography-mass spectrometry, and immunological studies, and their structures were concluded to be as follows. [formula: see text] The second ganglioside has the same structure that was isolated from bovine buttermilk (Takamizawa, K., Iwamori, M., Mutai, M., and Nagai, Y. (1986) J. Biol. Chem. 261, 5625-5630), and this is the first description of the occurrence of the ganglioside with the branched structure with two N-acetyllactosamines linked to lactosylceramide via beta 1-6 and beta 1-3 in human linked to lactosylceramide via beta 1-6 and beta 1-3 in human tissues. The third ganglioside is a novel ganglioside with blood group I-type and a NeuAc alpha 2-6Gal structure.
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