Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
β-Galactosidase activities of Y. pestis strains containing pYFU4
| Strain | β-Galactosidase activity (mean ± SE)a
|
Ratio, −Fe/+Fe | |
|---|---|---|---|
| −Fe | +Fe | ||
| KIM6(pYFU4)+ (ybt+yfu::lacZ) | 9,221 ± 160 | 1,680 ± 107 | 5.5 ± 0.5 |
| KIM6(pYFU4)(Δybt yfu::lacZ) | 7,499 ± 79 | 1,713 ± 77 | 4.4 ± 0.2 |
| KIM6-2030(pYFU4)(Δybt fur::kan-9 yfu::lacZ) | 7,849 ± 783 | 7,393 ± 899 | 1.1 ± 0.03 |
Cells were grown without (−Fe) or with (+Fe) 10 μM iron.
