R-cell1 | Plasmid SS (+/-)2 | Integration Frequency3 |
---|
Cre
| — | 0.76 |
Cre
| + | 0.005 |
TelN
| — | 0.51 |
TelN
| + | 0.02 |
Tel
| — | 1.0 |
Tel
| + | 1.03 X 10-5 |
- 1 R-cells are all W3110 derivatives expressing recombinase gene at 42°C the recombinase gene is fully induced . R-cells carry the λ int expression plasmid pAH153.
- 2 pAH120 plasmid carrying λ attP.
- 3 Mean of minimum 3 trials. IF is expressed as fraction of integration frequency of parent strain, W3110.