si_0869 Periplasmic_Acid_Stress_Response_in_Enterobacteria Chaperone HdeA si_0869 Periplasmic_Acid_Stress_Response_in_Enterobacteria Chaperone HdeB si_0869 Periplasmic_Acid_Stress_Response_in_Enterobacteria Membrane transporter HdeD, H-NS repressed si_0869 Periplasmic_Acid_Stress_Response_in_Enterobacteria Putative membrane transporter ATPase,YhiD si_0869 Periplasmic_Acid_Stress_Response_in_Enterobacteria Transcriptional activator GadE