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Urease activity in whole-cell samples of E. coli clones containing the plasmids pURE1, pJBG15B, and pJBG15C and grown in the presence or absence of added NiCl2
| NiCl2 concn (μM) | Mean urease activity (μM NH3/min/ml) ± SD in E. coli carrying:
|
||
|---|---|---|---|
| pURE1 | pJBG15B | pJBG15C | |
| 0 | 0.96 ± 0.01 | 1.69 ± 0.15 | 5.57 ± 0.20 |
| 2 | 1.18 ± 0.02 | 4.42 ± 0.18 | 8.72 ± 0.06 |
| 20 | 1.37 ± 0.08 | 4.79 ± 0.03 | 10.03 ± 0.21 |
| 200 | 3.66 ± 0.08 | 5.14 ± 0.05 | 9.63 ± 0.23 |
