TABLE 1.
Conjugal transfer frequencies of SLP2tsr and its derivatives
| Donor (genotype) | Recipient (genotype) | Plasmid transfer frequencya |
|---|---|---|
| TK64 (pro-2 str-6)/SLP2tsr | M145 | 0.98b |
| TK64 (pro-2 str-6)/SLP2tsrΔspd | M145 | 1.38 × 10−4b |
| TK64 (pro-2 str-6)/SLP2tsr | TK54 (his-2 leu-2 spc-1) | 1.10c |
| TK64 (pro-2 str-6)/SLP2tsrΔtra | TK54 (his-2 leu-2 spc-1) | <1.53 × 10−7c |
| TK64 (pro-2 str-6)/SLP2tsrΔspd | TK54 (his-2 leu-2 spc-1) | 1.02c |
| TK64 (pro-2 str-6)/SLP2tsrΔpar | TK54 (his-2 leu-2 spc-1) | 0.83c |
a
Frequencies of spontaneous mutation giving rise to the recombinant type in the donors and recipients were all lower than 3 × 10−7.
b
Pro+ Thior colonies divided by Pro+ colonies.
c
Pro+ Thior Spcr colonies divided by Pro+ Spcr colonies.