TABLE 2.
Transcriptional activation of bfeA by catecholamines
| Compound | β-Galactosidase activity (Miller units) of B013N(pMP3) (bfeA-lacZ):
|
Fold inductiona | |
|---|---|---|---|
| Without Fe | Without Fe and with compound (50 μM) | ||
| Norepinephrine | 32.1 (±27.8)b | 904.7 (±61.0) | 28.2 |
| Carbidopa | 55.2 (±3.8) | 1,388.1 (±257.4) | 25.1 |
| Isoproterenol | 55.2 (±3.8) | 1,375.5 (±209.7) | 24.6 |
| Phenylephrine | 38.4 (±9.2) | 24.1 (±15.2) | −c |
| Tyramine | 38.4 (±9.2) | 43.1 (±17.0) | 1.1 |
a
LacZ activity without Fe and with compound ÷ LacZ activity without Fe.
b
±1 standard deviation.
c
−, no induction.