Repression of the locus of the enterocyte effacement-encoded regulator of gene transcription of Escherichia coli O157:H7 by Lactobacillus reuteri culture supernatants is LuxS and strain dependent.
Culture supernatants of Lactobacillus reuteri ATCC 55730 repressed ler expression in Escherichia coli O157:H7 cells, but neither the strain's isogenic luxS mutant nor the L. reuteri 100-23C wild-type strain and its luxS mutant elicited a comparable effect. Furthermore, the epinephrine-mediated induction of ler expression was repressed by secreted substance(s) of L. reuteri ATCC 55730.
Jelcić
Ivan
I
Institute of Food Science and Biotechnology, Section of Food Microbiology, University of Hohenheim, Stuttgart, Germany.
Hüfner
Eric
E
Schmidt
Herbert
H
Hertel
Christian
C
D000898:Antibiosis; D001426:Bacterial Proteins / Q000235:genetics / Q000502:physiology*; D013437:Carbon-Sulfur Lyases / Q000235:genetics / Q000502:physiology*; D019453:Escherichia coli O157 / Q000187:drug effects / Q000235:genetics*; D029968:Escherichia coli Proteins / Q000096:biosynthesis*; D005786:Gene Expression Regulation / Q000187:drug effects*; D052200:Limosilactobacillus reuteri / Q000235:genetics / Q000502:physiology*; D015534:Trans-Activators / Q000096:biosynthesis*
D001426:Bacterial Proteins; D029968:Escherichia coli Proteins; C465556:Ler protein, E coli; D015534:Trans-Activators; D013437:Carbon-Sulfur Lyases; C117753:LuxS protein, Bacteria