Bioactivity assay results of antimicrobial and cytotoxicity assays.
| Premetathramycin (5) | Tetracycline | Nystatin | Mithramycin A (1) | Metathramycin (6) | |
|---|---|---|---|---|---|
| E. coli ΔtolC | >128 | 0.125 | ND | >32 | ND |
| B. subtilis E168 | 2 | 1 | ND | 0.004 | ND |
| S. cerevisiae ΔPDR | 32 | ND | 0.5 | 32 | ND |
| HCT-116 | 1.91 | ND | ND | 0.013 | 0.015 |