“Fold diff” depicts fold difference, which is calculated using the formula: MIC of 11168/MIC of a mutant strain. ≥4-fold changes are indicated in bold.*The MICs of 11168B are significantly lower than
Rapid dissemination of the plasmid-born polymyxin resistance gene mcr-1 poses a critical medical challenge. MCR-1 expression is tightly controlled and imposes a fitness cost on the bacteria. We used g