Table 1.

Expression of sboΔBH-lacZ

StrainRelevant genotypeβ-Galactosidase activity (Miller units)a
NitrateNitrite
ORB3162Wild type1,4622,096
ORB3349fnr::spc422,182
ORB3350ΔnarGH::phleo521,777
ORB3348ΔresDE::tet713
ORB3437spo0A::erm220391
ORB3241abrB::neo1,681 NTb
ORB3438spo0A::erm abrB::neo2,042NT
ORB3384ΔresDE::tet abrB::neo14NT
  • a Cells were grown anaerobically in 2xYT medium with 1% glucose supplemented with 0.2% KNO3 or 10 mM KNO2. The maximal activity of at least two independent experiments is shown.

  • b NT, not tested.