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Transcriptional activation by the FNR-type mutant CprK1(V192E). In vivo promoter probe assays were carried out with aerobically grown E. coli JM109(DE3) cells overproducing wild-type CprK1 (solid bars) or CprK1(V192E) (dark shaded bars) or carrying an empty pET24d expression vector (light shaded bars). All experiments were done in the presence of 20 mM Cl-OHPA with cells carrying either a DB3::lacLM promoter fusion or a DB3FNR::lacLM promoter fusion.
