Figure 4
From: Transcriptional analysis of ESAT-6 cluster 3 in Mycobacterium smegmatis
msmeg0615 (pr1) promoter activity. β-galactosidase activity of cultures grown in Sauton medium in the presence of varying divalent metal ions. The values, expressed as nanomoles of o-nitrophenol-β-D-galactopyranoside converted to o-nitrophenol min-1 mg-1 of protein, represent the average and the standard deviation of three independent clones. * indicates that values are significantly different from the control value (p < 0.01).