abab:BJAB0715_02520 K07667 two-component system, OmpR family, KDP operon response regulator KdpE | (GenBank) Response regulators consisting of a CheY-like receiver domain and a winged-helix DNA-binding domain protein abab:BJAB0715_02521 K07646 two-component system, OmpR family, sensor histidine kinase KdpD [EC:2.7.13.3] | (GenBank) Osmosensitive K+ channel histidine kinase