Abstract
AbstractModern glycan analysis is primarily based on mass spectrometry, where instruments based on electrospray or matrix-assisted laser desorption ionization are currently the most frequently used. In the present study, electrospray ionization (ESI) coupled with a high-resolution Fourier transform mass spectrometer (LTQ Orbitrap) and matrix-assisted laser desorption/ionization (MALDI) coupled with a time-of-flight (TOF/TOF) detector were used to analyze two N-glycan standards with intact free reducing ends (disialo biantennary and asialo triantennary) and representative PA-labeled human serum N-glycan structures isolated by hydrophilic interaction anion-exchange chromatography (HIAX), confirmed by
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