Role of Transporter Proteins in Bile Tolerance of<i>Lactobacillus acidophilus</i>

Abstract

Lactobacillus acidophilus NCFM derivatives containing deletion mutations in the transporter genes LBA0552, LBA1429, LBA1446, and LBA1679 exhibited increased sensitivity to bile. These strains showed unique patterns of sensitivity to a variety of inhibitory compounds, as well as differential accumulations of ciprofloxacin and taurocholate.