TABLE 2.
Bacterial strains used in this study
| Strain | Relevant characteristic(s) | Source or reference |
|---|---|---|
| S. mutans UA159 | Wild type | ATCC |
| S. mutans UA-perR | UA159 variant with perR mutation | Spontaneously occurring/laboratory stock |
| S. mutans ΔspxA1 | spxA1::Spec | 42 |
| S. mutans UAΔperR | perR::Erm | This study |
| S. mutans UAΔperR + perR | perR::Erm, mtl insertion, perR+ | This study |
| S. mutans NG8 | Wild type, truncated PerR | Laboratory stock |
| S. mutans NG8 + perR | mtl insertion, perR+ | This study |
| S. mutans GS-5 | Wild type, PerRA36D | Laboratory stock |
| S. mutans GS-5+ perR | mtl insertion, perR+ | This study |