has role amino cyclitol glycoside toxin kanamycin B tobramycin Nebramycin 6 Tobramycin A amino cyclitol glycoside that is kanamycin B lacking the 3-hydroxy substituent from the 2,6-diaminoglucose ring. CHEBI:9610 3'-Deoxykanamycin B CHEBI:28864 Tobracin (TN) Tobrex (TN) O-3-Amino-3-deoxy-alpha-D-glucopyranosyl-(1-4)-O-(2,6-diamino-2,3,6-trideoxy-alpha-D-ribohexopyranosyl-(1-4))-2-deoxy-D-streptamine chebi_ontology CHEBI:45933 CHEBI:19849 Nebramycin factir 6 antibacterial agent tobramycin(5+)