Figure 4 .

β-galactosidase assays inC. metalliduransAE104 of PpbrAactivation in response to 20 μM Pb(II) on wild-type PbrR and its cysteine mutants in pMUPbrR/PpbrA.

Hobman et al. BMC Microbiology 2012 12:109   doi:10.1186/1471-2180-12-109
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