Expression of yflG lacZ transcriptional fusions in yvoA disrupted strain. A. gene organization around yflG and yvoA. The arrows indicate the direction of gene transcription; B. β-galactosidase expression yflG lacZ transcriptional fusion in yvoA disrupted strain BSIP8004 and yvoA wild type strain BFS4611 grown in minimal medium. OD600 (○) and β-galactosidase activity (●) were measured for strain BSIP8004. OD600 (□) and β-galactosidase activity (■) were measured for strain BSIP8004 and strain BFS4611.