Structures of novel sialylated O-linked oligosaccharides isolated from human erythrocyte glycophorins.
نویسندگان
چکیده
The O-linked oligosaccharides attached to human erythrocyte glycophorins were extensively characterized. In addition to the previously described disialylated tetrasaccharide, NeuNAc alpha 2----3Gal beta 1----3 (Neu-NAc alpha 2----6)GalNAcOH and monosialylated trisaccharide, NeuNAc alpha 2----3Gal beta 1----3GalNAcOH, novel trisialylated oligosaccharides were isolated. Methylation analysis, fast atom bombardment-mass spectrometry, and enzymatic degradation were used to elucidate the following novel structures: formula; see text: These results suggest that O-linked oligosaccharides with a disialosyl group, NeuNAc alpha 2----8NeuNAc alpha 2----, may be present in various tissues.
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ورودعنوان ژورنال:
- The Journal of biological chemistry
دوره 262 25 شماره
صفحات -
تاریخ انتشار 1987