Newcastle disease virus contains a linkage-specific glycoprotein sialidase. Application to the localization of sialic acid residues in N-linked oligosaccharides of alpha 1-acid glycoprotein.
作者： J C Paulson , J Weinstein , L Dorland , H van Halbeek , J F Vliegenthart
DOI: 10.1016/S0021-9258(18)33573-7
关键词:
摘要: Newcastle disease virus sialidase was found to exhibit strict specificity for hydrolysis of the NeuAc alpha 2 leads 3Gal linkage contained in glycoprotein oligosaccharides both N-linked asparagine and O-linked threonine or serine under conditions that left containing 6Gal 6GallNAc linkages intact. This determined, part, by examining viral its ability hydrolyze derivatized with purified sialyltransferases contain [14C]NeuAc 3Gal, 6GalNAc, linkages. The also tested on 1-acid glycoprotein. Selective shown periodate oxidation 500-MHz 1H-NMR spectroscopy native sialidase-treated glycopeptides. NMR spectra, together composition data, further indicated were localized specific branches major tri- tetraantennary results indicate can initiate selective degradation oligosaccharide linkage.
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