TABLE 1.
S. pneumoniae strains used in the study
| Strain | Genotype or phenotype | Source or reference |
|---|---|---|
| P10 | Type 9V | Clinical isolate |
| P24 | R6, nonautolytic | 37 |
| P43 | Type 22, optochin sensitive | Clinical isolate |
| P44 | Type 22, optochin resistant | Clinical isolate |
| P62 | P10, expresses <0.02 mM H2O2 | 35 |
| P303 | Type 6A | Clinical isolate |
| P324 | Type 6B | Clinical isolate |
| P763 | P324, opaque variant, lacks XbaI methylation | This study |
| P765 | P324, transparent variant, XbaI methylation | This study |
| P806 | Opaque revertant of P765, lacks XbaI methylation | This study |
| P833 | Type 23F clinical isolate, truncated 22-kDa PspA | 26 |
| P878 | D39spxB::TnphoA(erm), expresses <0.02 mM H2O2 | 35 |
| D39 | Type 2 | 19 |
| R6 | D39, unencapsulated | 19 |
| WG44.1 | PspA mutant transformant derived from D39 | 28 |
| TIGR4 | Type 4 genome sequence strain | 41 |