Member of the two-component regulatory system WalK/WalR involved in the regulation of the ftsAZ operon, the yocH, ykvT, cwlO, lytE, ydjM, yjeA, yoeB genes and the tagAB and tagDEF operons. Binds to the ftsAZ P1 promoter sequence in vitro. WalR has been shown to directly bind to the regulatory regions of yocH, ykvT, tagAB/tagDEF. Activates cwlO, lytE and ydjM and represses yoeB and yjeA. Homodimer. Expressed during exponential growth and shut down at the entry into stationary phase. Phosphorylated by WalK.