Journal
JOURNAL OF PROTEOME RESEARCH
Volume 19, Issue 10, Pages 3890-3905Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jproteome.0c00435
Keywords
methods; O-glycans; O-GlcNAc; beta-elimination; LC; MS; exoglycosidases; glycoproteomics; glycosyltransferases; quantitation
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Funding
- Science Foundation Ireland (SFI)
- European Regional Development Fund [13/RC/2073, 17/RC-PhD/3480]
- Science Foundation Ireland (SFI) [17/RC-PhD/3480] Funding Source: Science Foundation Ireland (SFI)
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Glycosylation is crucial in cellular metabolism and survival. Of interest is the role of N-linked and O-linked glycans in disease states. Robust analytical methods must be defined to identify suitable glycan biomarkers and glyco-therapeutics. Fortunately, in N-glycan analysis, a universal enzyme exists to deglycosylate a variety of common-core structures from proteins for analysis using mass spectrometric and fluorescence techniques. Unfortunately, for their O-linked counterparts, no such enzyme exists. Furthermore, O-glycan heterogeneity is vast due to the lack of a common glycan core, making analysis challenging. As such, chemical methods are used to liberate O-glycans, however, often to the detriment of the glycan's structure due to peeling reactions. This review outlines approaches for O-glycan release and downstream glycomic and glycoproteomic analysis.
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