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  • Title: Primary structure of the oligosaccharide determinant of blood group Cad specificity.
    Author: Blanchard D, Cartron JP, Fournet B, Montreuil J, van Halbeek H, Vliegenthart JF.
    Journal: J Biol Chem; 1983 Jun 25; 258(12):7691-5. PubMed ID: 6190803.
    Abstract:
    Glycophorin A and B from Cad erythrocyte membranes are the carriers of the blood group Cad determinants. They are characterized by a significant increase in molecular mass, as compared to the corresponding glycophorins from control erythrocytes (Cartron, J.-P., and Blanchard, D. (1982) Biochem. J. 207, 497-504). Lipid-free glycophorin A, purified from Cad red cells, showed an increased GalNAc content in comparison to blood group B, Cad-negative, control cells. Alkaline-borohydride treatment of this Cad glycophorin A released as a predominant species a pentasaccharide; its structure was determined, by methylation analysis and by 500-MHz 1H-NMR studies, to be: (formula; see text) This novel oligosaccharide inhibited strongly the hemagglutination of Cad erythrocytes by the Dolichos biflorus lectin. It shares with the blood group Sda determinant a terminal GalNAc beta (1 leads to 4)Gal beta (1 leads to .) sequence.
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