The tigecycline resistance gene tetX has an expensive fitness cost based on increased outer membrane permeability and metabolic burden in Escherichia coli

Tao Chen, Min-Xing Zhao, Xiaoyue Tang, Wenxiao Wei, Xin Wen, Shizheng Zhou, Baohua Ma, Yongde Zou, Na Zhang, Jiandui Mi, Yan Wang, Xindi Liao, Yinbao Wu