Fig. 2
Cd(II) dependent activity of TtarsX promoter with transcriptional bgaA fusions. a Schematic representation of the reporter system used to transform T. thermophilus HB27 and TTC0354::pK18. b β-gal activity expressed in % MU of T. thermophilus HB27-pMHTtarsXpbgaA treated or not with 10, 20 and 100 µM of CdCl2. Statistical analysis was performed using the Student’s t test; significant differences are indicated as: *p < 0.05, **p < 0.01, ***p < 0.001, ****p < 0.0001