Table 2.

lacZ::anfA fusion expression in BC4B and BC4BRSa

Growth phaseStrainβ-Galactosidase activity
pLCpALC
ExponentialBC4B136
BC4BRS144
StationaryBC4B105,032
BC4BRS91,223
  • a β-galactosidase activity was measured as nanomoles of O-nitrophenol/min/106plasmid-containing cells by the method of Miller (14). Individual assays were measured in triplicate, and the activity units of three separate assays were averaged for each data point.