Table 2.

β-Galactosidase activities of exponentially growing cells (OD600, 0.4) bearing different Φ(adhE-lacZ) operon fusions in LB-glucose medium

StrainGenotypeβ-Galactosidase activity (Miller units)a
+O2−O2−O2/+O2 ratio
ECL4013Φ(adhE-lacZ)656 1,000 ± 1009,200 ± 5309.3
ECL4028Φ(adhE-lacZ)656 fis::kan 910 ± 60890 ± 1000.9
ECL4022Φ(adhE-lacZ)656 fnr::Tn10 958 ± 469,880 ± 24010.3
ECL4011Φ(adhE-lacZ)291 300 ± 503,600 ± 2509.0
ECL4027Φ(adhE-lacZ)291 fis::kan 380 ± 403,000 ± 3508.0
ECL4020Φ(adhE-lacZ)291 fnr::Tn10 330 ± 45345 ± 321.1
  • a +O2, aerobic; −O2, anaerobic.