期刊
RAPID COMMUNICATIONS IN MASS SPECTROMETRY
卷 16, 期 13, 页码 1320-1329出版社
JOHN WILEY & SONS LTD
DOI: 10.1002/rcm.723
关键词
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An on-line high-performance liquid chromatography/mass spectrometry (HPLC/MS) method is described for the rapid characterization of any type of oligosaccharide released from glycoproteins. The procedure can be applied without further manipulation to fractions collected from a high-performance anion-exchange chromatography-pulse amperometric detection (HPAEC-PAD) system commonly used for glycosylation mapping of glycoproteins, or to a pool of oligosaccharides directly released from glycoproteins. The system consists of a porous graphitized high-performance chromatography column (Hypercarb) coupled to a quadrupole time-of-flight (TOF) mass spectrometer. Oligosaccharides are eluted from the column with a gradient of ammonium acetate/acetonitrile and directly identified following in-source fragmentation. Some applications of the method are presented, as well as information about the spectra and fragmentation behavior observed for N- and O-linked oligosaccharides released from some recombinant glycoproteins. Low femtomole limits of detection are achieved using proper miniaturization. Copyright (C) 2002 John Wiley Sons, Ltd.
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