Precise assignment of sialylation linkages at the glycopeptide level is of importance in bottom-up glycoproteomics, and is also an indispensable step to understand the function of glycoproteins in pathogen-host interactions and cancer progression. Even though some efforts have been dedicated to the ...
O-GlcNAc proteins in LNM and non-LNM breast tumors of IDCs were identified by using the strategy of chemo-enzymatic labeling in combination with click chemistry and LC-MS/MS.