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Comparison of aphB expression in classical and El Tor biotypes
| Strain | β-Galactosidase activitya at pH and temp:
|
||||
|---|---|---|---|---|---|
| AKI medium | LB medium
|
||||
| 6.5, 30°C | 8.5, 30°C | 6.5, 37°C | 8.5, 37°C | ||
| GK130 (classical aphB-lacZ) | 201 ± 6 | 176 ± 3 | 129 ± 1 | 100 ± 3 | 78 ± 1 |
| GK142 (El Tor aphB-lacZ) | 223 ± 2 | 207 ± 2 | 137 ± 1 | 98 ± 6 | 83 ± 7 |
Units per optical density at 600 nm of culture.
