| ESI-MS | Electrospray ionization mass spectrometry |
| Gal | Galactose |
| GalNAc | N-Acetylgalactosamine |
| GalNAcox | N-Acetylgalactosamine oxazoline (catalytic intermediate during enzymatic hydrolysis) |
| Glc | Glucose |
| GlcA | Glucuronic acid |
| GlcNAc | N-Acetylglucosamine |
| GlcNAcox | N-Acetylglucosamine oxazoline (catalytic intermediate during enzymatic hydrolysis) |
| HB | Hydrogen bond |
| MurNAc | N-acetylmuramic acid |
| MurNAc-OPr | Propyl glycoside of N-acetylmuramic acid |
| pNP-GalNAc | 4-Nitrophenyl N-acetyl-β-d-galactosaminide |
| pNP-GlcNAc | 4-Nitrophenyl N-acetyl-β-d-glucosaminide |
| TfHex WT | Wild type β-N-acetylhexosaminidase from Talaromyces flavus |
| TfHex Y470H | Mutant β-N-acetylhexosaminidase from Talaromyces flavus, Tyr470 is exchanged for His |