title: Structures of oligosaccharides cleaved by base-borohydride from an I, H and Lea active ovarian cyst glycoprotein.
abstract: Oligosaccharides were cleaved by base-borohydride from an I, H and Lea active ovarian cyst glycoprotein and purified by Bio-Gel P-6 and paper chromatography. The structures of five oligosaccharides, determined by compositional analyses, quantitative periodate oxidation, chronic acid oxidation, methylation analyses and enzymatic degradations, were as follows: oligosaccharide I, beta DGal1----3DGalNAc-ol; II, beta DGal1----4 beta DGlcNAc1----6(beta DGal1----3)DGalNAc-ol; III, alpha LFuc1----2 beta DGal1----4 beta DGlcNAc1----6(beta DGal1----3)DGalNAc-ol; IV, beta DGal1----3(alpha LFuc1----4)beta DGlcNAc1----3beta DGal1----4 beta DGlcNAc1----6(beta DGal1----3)DGal1NAcol; and V, beta DGal1----3(alpha LFuc1----4)beta DGlcNAc1----3 beta DGal1----4 beta DGlcNAc1----6[beta DGal1----3(alpha LFuc1----4)beta DGlcNAc1----3 beta DGal1----3 beta DGal1----3]DGalNAc-ol. Of the oligosaccharides 60% had a molecular size of a decasaccharide or smaller, the tetra- and pentasaccharides II and III predominating. Oligosaccharides I through IV have been previously isolated from several glycoproteins by other laboratories; the decasaccharide, V, is a new structure.
mesh_terms: D000017:ABO Blood-Group System; D001789:Blood Group Antigens; D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D005260:Female; D006023:Glycoproteins / Q000302:isolation & purification; D006801:Humans; D007048:I Blood-Group System; D007983:Lewis Blood Group Antigens; D009844:Oligosaccharides / Q000302:isolation & purification*; D010048:Ovarian Cysts / Q000378:metabolism*
chemical_list: D000017:ABO Blood-Group System; D001789:Blood Group Antigens; D006023:Glycoproteins; D007048:I Blood-Group System; D007983:Lewis Blood Group Antigens; D009844:Oligosaccharides