Furthermore , we demonstrate that SoxS mediate repression of rob by binding to its promoter region .
rob is negatively regulated by SoxS The transcript levels of rob in the DsoxS strains were repressed after treatment with NaOCl as in the wild type .
rob is negatively regulated by SoxS The transcript levels of rob in the DmarA strains were repressed after treatment with NaOCl as in the wild type .
This confirms our previous results that repression of rob in the must have been due to overexpression of SoxS .
The results above suggest that SoxS could mediate together a repression of rob in response to NaOCl .
other studies _ performed in E. coli where rob was shown to be negatively regulated by both SoxS by a direct interaction with its promoter region