Zobrazeno 1 - 10
of 68
pro vyhledávání: '"Christian Vadeboncoeur"'
Publikováno v:
Biochemistry. 48:10765-10774
HPr is a central protein of the phosphoenolpyruvate:sugar phosphotransferase transport system (PTS). In streptococci, HPr can be phosphorylated at His(15) at the expense of PEP by enzyme I (EI) of the PTS, producing HPr(His approximately P). HPr can
Publikováno v:
Canadian Journal of Microbiology. 54:941-949
HPr is a protein of the phosphoenolpyruvate:sugar phosphotransferase transport system (PTS). In gram-positive bacteria, HPr can be phosphorylated on Ser-46 by the kinase/phosphorylase HprK/P and on His-15 by phospho-enzyme I (EI~P) of the PTS. In vit
Publikováno v:
Oral Microbiology and Immunology. 5:288-297
We show in this article that the transport of glucose, mannose and fructose by the phosphoenolpyruvate: mannose phosphotransferase system of oral streptococci requires the participation of a protein component that we have called IIIman. This protein
Publikováno v:
Journal of Dairy Science. 90:4051-4057
The capsule-producing, galactose-negative Streptococcus thermophilus MR-1C strain was first transformed with a low-copy plasmid containing a functional galK gene from Streptococcus salivarius to generate a recombinant galactose-fermenting Strep. ther
Publikováno v:
Journal of Dairy Science. 89:4156-4162
The aim of this work was to use fluorescently labeled lectins to develop a convenient and reliable method to determine the relative abundance of capsular polysaccharides (CPS) at the surface of Streptococcus thermophilus MR-1C cells. Fluorescein isot
Publikováno v:
Journal of Dairy Science. 88:2341-2347
The alpha-galactosidase gene (aga) of Lactococcus raffinolactis ATCC 43920 was previously shown to be an efficient food-grade selection marker in Lactococcus lactis and Pediococcus acidilactici but not in Streptococcus thermophilus. In this study, we
Autor:
Jean-Dominique LeMay, Sylvain Moineau, Katy Vaillancourt, Christian Vadeboncoeur, Maryse Lamoureux, Michel Frenette
Publikováno v:
Applied and Environmental Microbiology. 70:4596-4603
The lactic acid bacterium Streptococcus thermophilus is widely used by the dairy industry for its ability to transform lactose, the primary sugar found in milk, into lactic acid. Unlike the phylogenetically related species Streptococcus salivarius ,
Publikováno v:
Applied and Environmental Microbiology. 69:5423-5432
In most streptococci, glucose is transported by the phosphoenolpyruvate (PEP):glucose/mannose phosphotransferase system (PTS) via HPr and IIAB Man , two proteins involved in regulatory mechanisms. While most strains of Streptococcus thermophilus do n
Autor:
Katy Vaillancourt, Sylvie Nessler, Nicolas Frey, Christian Vadeboncoeur, Sonia Fieulaine, Michel Frenette
Publikováno v:
FEMS Microbiology Letters. 224:67-72
Phosphorylation of HPr, the small phosphocarrier protein of the phosphoenolpyruvate:sugar phosphotransferase system, on Ser46 by the HPr(Ser) kinase (HPrK/P) is a vital step in catabolite repression in Gram-positive bacteria. Streptococcus salivarius
Autor:
Katy Vaillancourt, Sylvain Moineau, Christian Vadeboncoeur, Christian B. Lessard, Michel Frenette
Publikováno v:
Journal of Bacteriology. 184:785-793
Streptococcus salivarius is a lactose- and galactose-positive bacterium that is phylogenetically closely related to Streptococcus thermophilus , a bacterium that metabolizes lactose but not galactose. In this paper, we report a comparative characteri