The Two-Component Response Regulator RcsB Regulates Type 1 Piliation in Escherichia coli.

The ability of Escherichia coli cells to produce type 1 pili depends upon the orientation of the fimA promoter. The orientation depends upon the ratios of the FimB and FimE recombinases. Here, we report that the two-component response regulator RcsB influences the piliation state by controlling fimB and fimE transcription. [ABSTRACT FROM AUTHOR]