Schematic representation of the HG-TCs workflow. (A) Workflow of the rapid and large-scale enrichment strategy based on TC-resins. (B) Schematic illustration of TC-resins for peptide enrichment. (C) Schematic illustration of simultaneous identification of N-glycosites, O-GlcNAc sites, O-GalNAc sites and N-glycans via a two-step enzymatic release strategy. Reprinted from Ref. [2].