TABLE 3.
Comparison of methanol-extracted carotenoid pigments from strains of Staphylococcus aureus
| Strain | Carotenoida |
|---|---|
| COL | 100.0 |
| SKC31b | 32.4 |
| SKC31(pBCSA)b | 107.6 |
| SKC31(pBT2)b | 20.9 |
| IK183b | 15.4 |
| SKC32b | 15.2 |
a
Values are relative optical density units at 465 nm that have been normalized to and based on strain COL, which was set at 100. In triplicate experiments, the difference between strains COL and SKC31 was significant (P = 0.0006) and the difference between strains SKC31 (pBCSA) and SKC31(pBT2) was also significant (P = 0.004).
b
All strains are derivatives of strain COL. SKC31 has cspA::Km, while SKC32 has cspA::Km and the rsbUVWsigB deletion mutation in strain IK183; see Table 1.