Streptococcus thermophilus is able to produce a beta-galactosidase active during its transit in the digestive tract of germ-free mice.
This work presents data on the application of a bacterial luciferase used to monitor gene expression of Streptococcus thermophilus in the digestive tract. The main result is that the bacterium was able to produce an active beta-galactosidase in the digestive tract, although it did not multiply during its transit. This production was enhanced when lactose (the inducer) was added to the diet.
Drouault
Sophie
S
Arilait Recherches, 75009 Paris, France.
Anba
Jamila
J
Corthier
Gérard
G
D000818:Animals; D004064:Digestive System / Q000382:microbiology*; D005856:Germ-Free Life; D007785:Lactose / Q000378:metabolism; D008156:Luciferases / Q000235:genetics / Q000378:metabolism; D008297:Male; D051379:Mice; D008809:Mice, Inbred C3H; D013291:Streptococcus / Q000201:enzymology*; D001616:beta-Galactosidase / Q000378:metabolism*
D008156:Luciferases; D001616:beta-Galactosidase; D007785:Lactose