Immunochemical Studies on Bacterial Blood Group Substances. V:Structures of B determinant groups

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概要

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• The terminal α-galactosyl linkage was hydrolyzed by an enzyme preparation from either Clostridium maebashi or coffee beans. Reduction of blood group B activity of Salmonella milwaukee and Escherichia coli O80 lipopolysaccharides and of some oligosaccharides occurred consequently. The degraded lipopolysaccharides showed significant blood group O (H) activity indicating the presence of terminal α-fucosyl residues in them and the same activity was demonstrated with oligosaccharide A-3 after the enzyme treatment. α-Fucosidase derived from Bacillus fulminans caused liberation of fucose from the α-galactosidase-treated materials and abolishment of O (H) activity. The results of quantitative analysis, borohydride reduction, Morgan-Elson reaction and treatments with several kinds of enzyme preparations on a series of oligosaccharides indicated that the structure of O-somatic side chain of E. coli O80 is probably; α-D-Gal-(1→3)-β-D-Gal-D-Ga1NAc-(1→3)-D-GalNAc-(1→4)-Fuc-α-L-Fuc(β-D-Glc)It was evident that there is a similarity in the terminal structure of lipopolysaccharides of E. coli O86, S. milwaukee and human B blood group substance.

• 財団法人 学会誌刊行センターの論文

著者

• Kochibe Naohisa

  Department of Biology, Faculty of Education, Gunma University

• ISEKI Shoei

  Department of Legal Medicine, School of Medicine Gunma University

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