si_0917 Tolerance_to_colicin_E2 Conserved uncharacterized protein CreA si_0917 Tolerance_to_colicin_E2 Two-component response regulator CreB si_0917 Tolerance_to_colicin_E2 Two-component response regulator CreC si_0917 Tolerance_to_colicin_E2 Inner membrane protein CreD si_0917 Tolerance_to_colicin_E2 Inner membrane protein CreD-like protein