TABLE 1.
Strains used in this study
| Strain | Descriptiona | Source |
|---|---|---|
| D39 | Capsular serotype 2 | NCTC 7466 |
| D39ΔgalR | galR deletion-replacement mutant, erythromycinr | This study |
| D39ΔgalK | galK deletion-replacement mutant, spectinomycinr | This study |
| D39ΔlacAB | lacAB deletion-replacement mutant, spectinomycinr | This study |
| D39ΔlacD | lacD deletion-replacement mutant, erythromycinr | This study |
| D39ΔgalRΔlacD | galR, lacD deletion-replacement mutant, erythromycinr and spectinomycinr | This study |
| D39ΔgalR Janus | galR deletion-replacement mutant utilizing Janus cassette, kanamycin, streptomycins | This study |
| D39AAA | galR S317A, T319A, T323A amino acid substitution mutant, kanamycins, streptomycins | This study |
| D39ATT | galR S317A amino acid substitution mutant, kanamycins, streptomycinr | This study |
| D39SAT | galR T319A amino acid substitution mutant, kanamycins, streptomycinr | This study |
| D39STA | galR T323A amino acid substitution mutant, kanamycins, streptomycinr | This study |
| D39AAT | galR S317A, T319A amino acid substitution mutant, kanamycins, streptomycinr | This study |
| D39ATA | galR S317A, T323A amino acid substitution mutant, kanamycins, streptomycinr | This study |
| D39SAA | galR T319A, T323A amino acid substitution mutant, kanamycins, streptomycinr | This study |
a
Superscript “r” and “s” following antibiotic names indicate resistance and sensitivity, respectively.