A high-throughput protocol was developed for combined proteomics and glycomics purification and LC-MS/MS quantification in plasma. Deamidation analysis of N-linked glycosylation motifs was specific to deglycosylated sites. Accurate quantitation of N-glycans was achieved by coupling filter aided N-glycan separation to the individuality normalization when labeling with glycan hydrazide tags strategy.
Hecht, E. S., McCord, J. P., Muddiman, D. C. A Quantitative Glycomics and Proteomics Combined Purification Strategy. J. Vis. Exp. (109), e53735, doi:10.3791/53735 (2016).