Fig. 1From: Glycomic Approaches to Study GlcNAcylation: Protein Identification, Site-mapping, and Site-specific O-GlcNAc QuantitationO-GlcNAc site information is lost before peptide backbone fragmentation. CAD MS/MS spectrum of GlcNAcylated peptide (YSPTgSPSK, [M+GlcNAc+2H]2+ 535.2) showing a major peak [M+H]+ 866.3 corresponding to loss of GlcNAcBack to article page