>sp|A7ZT19|NIKR_ECO24 Nickel-responsive regulator OS=Escherichia coli O139:H28 GN=nikR MQRVTITLDDDLLETLDSLSQRRGYNNRSEAIRDILRSALAQEATQQHGTQGFAVLSYVY EHEKRDLASRIVSTQHHHHDLSVATLHVHINHDDCLEIAVLKGDMGDVQHFADDVIAQRG VRHGHLQCLPKED