The carbohydrate binding specificity of Datura stramonium agglutinin was studied by analyzing the behavior of a variety of complex-type oligosaccharides on a D. Stramonium agglutinin-Sepharose column. Oligosaccharides which contain Gal beta 1----4GlcNAc-beta 1----4(Gal beta 1----GlcNAc beta 1----2)Man units are retarded in the column so long as the pentasaccharide unit is not substituted by other sugars. Oligosaccharides which contain unsubstituted Gal beta 1----4GlcNAc beta 1----6(Gal beta 1----4GlcNAc beta 1----2)Man groups and those in which there is at least one Gal beta 1----4GlcNAc repeating unit present on an outer chain bind to the column and are eluted with buffer containing N-acetylglucosamine oligomers. Binding was not affected by the inner core portion of complex oligosaccharides nor by the presence of a bisecting N-acetylglucosamine residue. With these principles in mind, the column can be used as an effective tool for the analysis of complex-type, asparagine-linked sugar chains.
Carbohydrate binding properties of complex-type oligosaccharides on immobilized Datura stramonium lectin.
K. Yamashita,K. Totani,T. Ohkura,S. Takasaki,I. Goldstein,A. Kobata
Published 1987 in Journal of Biological Chemistry
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- Publication year
1987
- Venue
Journal of Biological Chemistry
- Publication date
1987-02-05
- Fields of study
Biology, Medicine, Chemistry
- Identifiers
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- Source metadata
Semantic Scholar, PubMed
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