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  • Title: Neutral core oligosaccharides of bovine submaxillary mucin--use of lead tetraacetate in the cold for establishing branch positions.
    Author: Mårtensson S, Levery SB, Fang TT, Bendiak B.
    Journal: Eur J Biochem; 1998 Dec 01; 258(2):603-22. PubMed ID: 9874229.
    Abstract:
    Oligosaccharide alditols were released from bovine submaxillary mucin by alkaline borohydride treatment. The fractions containing smaller neutral oligosaccharides were separated by HPLC, to give, in the mono-, di- and trisaccharide-alditol sizes, 19 different structures, in addition to three fucosylated tetrasaccharide alditols. Molecules were identified by NMR spectroscopy, electrospray-mass-spectrometry-mass-spectrometry, permethylation analyses, and highly selective Pb(OAc)4 oxidation at -30 degrees C, followed by borohydride reduction. Pb(OAc)4 oxidation was found to be generally applicable in identifying the branch position(s) of substitutions for all core structures. Among the isolated oligosaccharide alditols were structures not previously reported, including 12 structures not reported from bovine submaxillary mucin, and four structures (three core structures) not found in the Carbbank database.
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