Glycobiology vol 2 no 4 pp. 299-312, 1992
© 1992
research-article |
Carbohydrate structure of Marburg virus glycoprotein
1Biochemisches Institut am Klinikum der Universität Friedrichstraße 24, D-6300 Giessen
2Institut für Virologie, Philipps-Universität Robert-Koch-Straße 17, D-3550 Marburg, FRG
3To whom correspondence should be addressed
Received on March 18, 1992; accepted on April 23, 1992
Marburg virus was propagated in E6 cells, a cloned cell line of Vero cells, in the presence of [6-3H]glucosamine Radiolabelled viral glycoprotein was digested with trypsin, and oligosaccharides were liberated by sequential treatment with endo-ß-N-acetylglucosaminidase H, peptide-N4-(N-acetyl-ß-glucosaminyl)asparagine amidase F and O-glycosidase, by ß-elimination, and by alkaline hydrolysis. After fractionation by HPLC and gel filtration, glycans were characterized chromatographically, by digestion with exoglycosidases and, in part, by methylation analysis and liquid secondary ion mass spectrometry. The oligosaccharide structures thus established include oligomannosidic and hybrid-type N-glycans, as well as neutral fucosylated bitri- and tetraantennary species, most of which carry an additional bisecting N-acetylglucosamine. In addition, high amounts of neutral mucin-type O-glycans with type-1 and type-2 core structures were detected. None of the glycans present in this viral glycoprotein carried sialic acid residues.
Filoviridae glycoprotein Marburg virus oligosaccharides structure analysis
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