Journal
ANALYTICAL CHEMISTRY
Volume 73, Issue 24, Pages 6063-6069Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ac015534c
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- NIGMS NIH HHS [GM24349] Funding Source: Medline
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A new beta -elimination-based procedure has been devised for a microscale release of O-linked oligosaccharides from glycoproteins. Unlike the conventional Carlson degradation, which leads to formation of alditols, the procedure reported here renders the reducing end intact. Conversion of the liberated oligosaccharides to glycosylamines, in ammonia medium is followed by the production of the reducing oligosaccharides through the addition of boric acid. The quantitatively generated oligosaccharides with the reducing end can subsequently be derivatized with a fluorophoric reagent for capillary electrophoresis or, alternatively, analyzed through MALDI mass spectrometry. The microscale version of these chemical steps permits us to investigate structurally O-linked oligosaccharides at very low levels.
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