Table 4.
Species and strain | Transformation frequency (CFU μg DNA−1)a |
|
---|---|---|
pCG1/S. gordonii | pCG1/E. coli | |
S. gordonii CH1 | 446 ± 114 | 193 ± 46 |
S. mutans GS5 | 416 ± 55 | 129 ± 26 |
S. sanguinis SK36 | 8 ± 2 | 53 ± 14 |
Plasmid pCG1 isolated from recombinant S. gordonii (pCG1/S. gordonii) or E. coli (pCG1/E. coli) was used. The numbers are the means and standard deviations of the results of three independent experiments.