Fig. 3From: Glycomic Approaches to Study GlcNAcylation: Protein Identification, Site-mapping, and Site-specific O-GlcNAc QuantitationChemoenzymatic approaches for O-GlcNAc peptide enrichment. A Full scan spectra of GlcNAcylated peptide (TAPTgSTIAPG, [M+GlcNAc+H]+ 1118.5) solution before and after 12-h incubation with Y289L GalT1 and UDP-azido-Gal. B Flow charts representing approaches using different functional groups for biotinylation [18, 35, 36]. TCEP, Tris(2-carboxyethyl)phosphine hydrochloride; TBTA, Tris[(1-benzyl-1H-1,2,3-triazol-4-yl)methyl]amineBack to article page