FIG. 2.

Expression of the Prck-luxCDABE fusion, pBA428, in various strain backgrounds. Levels of expression are identical in the wild-type (14028/pBA428 [⧫]) and sdiA mutant (BA612/pBA428 [▪]) backgrounds. In a strain where sdiA is plasmid borne under the control of the arabinose-dependent araBAD promoter (BA612/pBA428/pBA321), Prck-luxCDABE expression is high in the presence of 0.2% arabinose (▴) and low in the presence of 0.2% glucose (53). Results shown are means of results from triplicate cultures. Error bars representing standard deviations were smaller than the symbols used and are therefore not shown.