https://www.ncbi.nlm.nih.gov/Structure/pdb/2W1Q
2W1Q: Unique ligand binding specificity for a family 32 Carbohydrate- Binding Module from the Mu...
HYALURONOGLUCOSAMINIDASE2-[BIS-(2-HYDROXY-ETHYL)-AMINO]-2-HYDROXYMETHYL-PROPANE-1,3-DIOLCALCIUM IONSODIUM ION