These data confirmed that RcsB positively controls dps expression , mainly playing the role of an inductor during the exponential phase .
These results indicated that the most important contribution of RcsB in dps induction is produced when the PrcsDB promoter is activated during the exponential phase .
In this sense , our micro-array results showed that RcsB induces transcription of dps in an RcsA-independent pathway , because gene expression was not affected in the rcsC11 rcsA mutant relative to those levels .
RcsB activates transcription of genes responsible for the dps gene .