Although the regulation of the pefI-srgC operon is SdiA-dependent , no SdiA-box was found upstream of any other position along the whole operon .
Although the regulation of the pefI-srgC operon is SdiA-dependent , no SdiA-box was found upstream of pefI along the whole operon .
Second , we described the mechanism of regulation by SdiA on the promoter region located upstream of pefI .
a relatively high affinity _ demonstrating a direct regulation of the pefI-srgC operon by SdiA