one mutant , strain a , isolated independently by multiple-step selection to viomycin resistance , was resistant to viomycin , tuberactinomycin-n , and capreomycin through an alteration of the 50s ribosomal subunit , whereas it was sensitive to kanamycin but resistant to streptomycin through an alteration of the 30s ribosomal subunit .
C0042697
viomycin
C0014405
tuberactinomycin-n