Heterologous Expression of BetL, a Betaine Uptake System, Enhances the Stress Tolerance ofLactobacillus salivariusUCC118

Abstract excerpt

Given the increasing commercial and clinical relevance of probiotic cultures, improving the technological robustness of what are often process-sensitive cultures is an important biological goal. The nisin-controlled expression system was used to direct the heterologous expression of the listerial betaine uptake system BetL in the probiotic strain Lactobacillus salivarius UCC118. Following nisin induction, strains...

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