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Updated: Oct 11, 2026

Pulse-chase Analysis of N-linked Sugar Chains from Glycoproteins in Mammalian Cells
Published on: April 27, 2010
Structural analysis of N-glycans of storage glycoproteins in soybean (Glycine max. L) seed
1Department of Bioresources Chemistry, Faculty of Agriculture, Okayama University, Japan.
Abstract:
The structures of N-linked sugar chains (N-glycans) of storage glycoproteins in soybean seeds have been identified. Eight pyridylaminated (PA-) N-linked sugar chains were derived and purified from hydrazinolysates of the storage glycoproteins by reverse-phase HPLC and size-fractionation HPLC. The structures of the PA-sugar chains purified were first identified by two-dimensional PA-sugar chain mapping and ion-spray mass analysis, considering the results of sugar composition analysis or sequential exoglycosidase digestion. The deduced structures were further analyzed by ion-spray tandem mass spectrometry and 500 MHz 1H-NMR spectrometry. The eight structures fell into two categories; the major class (96.6%) was a typical high mannose-type, the minor class was a xylose containing-type (Man3Xyl1GlcNac2, Man3Fuc1Xyl1GlcNac2; 3.4%).
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