cell extracts from two representative strains phosphorylated and inactivated kanamycin , amikacin , gentamicin , tobramycin , 3',4'-dideoxykanamycin b ( dibekacin ) , butirosin , lividomycin , and ribostamycin , which together constituted a novel spectrum of substrates for the enzymatic activity .
C0022487
kanamycin
C0002499
amikacin