TABLE 2.
Expression of proteolytic system gene promoter-lux fusions in CDM supplemented with dipeptides LP and PL at 1 mM
| Promoter | CDM (lux/OD unit [103]; mean ± SD) | CDM + LP (lux/OD unit [103]; mean ± SD) | Strength of repression by LPa | CDM + PL (lux/OD unit [103]; mean ± SD) | Strength of repression by PLb |
|---|---|---|---|---|---|
| PprtP3c | 8,540 ± 95 | 3,800 ± 100 | 2 | 4,300 ± 300 | 2 |
| PoppA | 5,040 ± 300 | 760 ± 30 | 6.5 | 635 ± 1 | 8 |
| PoppD | 2,820 ± 160 | 750 ± 50 | 4 | 620 ± 65 | 4.5 |
| PpepN | 2,020 ± 140 | 830 ± 50 | 2.5 | 900 ± 70 | 2 |
| PpepC | 1,180 ± 130 | 630 ± 20 | 2 | 790 ± 10 | 1.5 |
| PpepX | 320 ± 30 | NDd | ND | 305 ± 20 | 1 |
| PpepQ | 215 ± 4 | ND | ND | 210 ± 10 | 1 |
a
Ratio between the values obtained in CDM and CDM + LP.
b
Ratio between the values obtained in CDM and CDM + PL.
c
PprtP3-lux fusion is carried on a high-copy-number plasmid.
d
ND, not determined.