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  • Title: Carbohydrate specificity of the receptor sites of mistletoe toxic lectin-I.
    Author: Wu AM, Chin LK, Franz H, Pfüller U, Herp A.
    Journal: Biochim Biophys Acta; 1992 Sep 15; 1117(2):232-4. PubMed ID: 1525184.
    Abstract:
    The carbohydrate specificity of mistletoe toxic lectin-I (ML-I) was studied by haemagglutination-inhibition assay. The results indicated that ML-I has a broad range of affinity for Gal alpha,beta linked sequences. The galabiose (E, Gal alpha 1----4Gal) sequence, a receptor of the uropathogenic E. coli ligand, was one of the best disaccharide inhibitors tested. The lectin also exhibits affinity for Lac(Gal beta 1----4Glc), T(Gal beta 1----3GalNAc), I/II(Gal beta 1----3/4GlcNAc) and B(Gal alpha 1----3Gal) sequences. Gal alpha 1----4Gal and Gal beta 1----4Glc are frequently occurring sequences of many glycosphingolipids located at the mammalian cell membranes, such as intestinal and red blood cell membranes, for ligand binding and toxin attachment. This finding provides important information concerning the possible mechanism of intoxication of cells by the mistletoe preparation.
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