TABLE 4.
MICs of streptovaricin (STV) and rifampin (RIF) against S. spectabilis NRRL2494 and S. albus transconjugants containing different mutagenized and nonmutagenized β- and β′-subunits
| Strain | Plasmid | Amino acid substitution(s) | STV MIC (μg/ml) | RIF MIC (μg/ml) |
|---|---|---|---|---|
| S. spectabilis NRRL 2494 | >200 | >40 | ||
| S. albus J1074 | 70 | 5 | ||
| S. albus(pEM4T) | pEM4T | 70 | 5 | |
| S. albus Aβ | pEM4T-Aβ | 70 | 5 | |
| S. albus Sβ | pEM4T-Sβ | 200 | 40 | |
| S. albus Sβ′ | pEM4T-Sβ′ | 70 | 5 | |
| S. albus CASβ | pEM4T-CASβ | 200 | 40 | |
| S. albus Sβ100 | pEM4T-Sβ100 | I467L | 200 | 40 |
| S. albus Sβ101 | pEM4T-Sβ101 | N474S | 200 | 5 |
| S. albus Sβ102 | pEM4T-Sβ102 | S475A | 200 | 40 |
| S. albus Sβ103 | pEM4T-Sβ103 | T638K | 200 | 20 |
| S. albus Sβ104 | pEM4T-Sβ104 | A639S | 200 | 40 |
| S. albus Sβ105 | pEM4T-Sβ105 | N474S/S475A | 70 | 5 |
| S. albus Aβ204 | pEM4T-Aβ204 | L463I | 70 | 5 |
| S. albus Aβ205 | pEM4T-Aβ205 | S470N | 80 | 5 |
| S. albus Aβ206 | pEM4T-Aβ206 | A471S | 80 | 5 |
| S. albus Aβ207 | pEM4T-Aβ207 | S470N/A471S | 200 | 40 |