TEO-GalNAc: Tag-free Chemoenzymatic Enrichment and Quantitative Mapping of Tn/T Antigen Sialylation Occupancy via Ketone-Oxime Chemistry

ABSTRACT: TEO-GalNAc is a chemoenzymatic strategy for tag-free enrichment and quantitative mapping of Tn/T O-GalNAc glycopeptides. Ketone-modified CMP-Sia is transferred by ST6GalNAc1 for selective tagging, followed by reversible oxime capture using hydroxylamine beads. Mild acid release enables tag-free recovery and quantitative assessment of sialylation occupancy on core GalNAc residues in complex samples.

ORGANISM(S): Homo Sapiens

SUBMITTER: Mingliang Ye  

PROVIDER: PXD075239 | iProX | Wed Mar 04 00:00:00 GMT 2026

REPOSITORIES: iProX