TABLE 2.
Zones of inhibition of bacterial strains against various inhibitorsa
| Relevant genotypeb | Zone of inhibition (mm) with indicated inhibitor
|
|||
|---|---|---|---|---|
| Novobiocin (30 μg) | Erythromycin (15 μg) | Rifampin (5 μg) | Vancomycin (75 μg) | |
| tolC+rfa+ | 7.8 | 6.7 | 8.6 | 7.4 |
| ΔtolC rfa+ | 20.8 | 14.0 | 9.0 | 6.5 |
| tolC+rfa+ ΔrcsB::Kmr | 8.5 | 6.9 | 8.5 | 7.4 |
| tolC+ Δrfa2057 ΔrcsB::Kmr | 19.8 | 12.1 | 16.3 | 8.5 |
a
The diameter of the paper disks was 6.5 mm. Averages from two independent experiments are shown.
b
The ΔrcsB::Kmr allele was used to prevent excessive capsule production due to the deletion of the LPS core genes in Δrfa2057.