Chem. Commun., 2026, Accepted Manuscript DOI: 10.1039/D6CC02099B, Communication Mitsuaki Hirose, Yuka Suzuki, Rentaro Miyuki, Kosuke Oki, Keirin Sato, Akihiro Yokoyama, Kiichiro Totani Fluorescently labeled glycans are widely used as chemical probes to study glycoprotein processing and quality control; however, they are generally regarded as passive reporters of enzymatic activity. In contrast, the...