TABLE 2.
Effects of hbaR on β-galactosidase activity expressed from a chromosomally encoded hbaA::′lacZ fusion in R. palustris
| Strain genotype | β-Galactosidase activitya
|
|||
|---|---|---|---|---|
| Anaerobic growth
|
Aerobic growth
|
|||
| 4-HBA + succinate | Succinate | 4-HBA | Succinate | |
| hbaA::′lacZ | 4,900 (240) | 240 (75) | 90 (5) | 140 (10) |
| hbaA::′lacZ hbaR | 120 (10) | 150 (10) | 70 (5) | 120 (10) |
a
Expressed as nanomoles of product formed per minute per milligram of protein. Values are the averages of three independent trials conducted in triplicate. Standard errors of the means are in parentheses.