Genetic and biological characterization of nine Streptococcus salivarius subsp thermophilus bacteriophages
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چکیده
منابع مشابه
Isolation and characterization of chromosomal promoters of Streptococcus salivarius subsp. thermophilus.
A promoter probe vector, pTG244, was constructed with the aim of isolating transcription initiation signals from Streptococcus thermophilus (Streptococcus salivarius subsp. thermophilus). pTG244 is based on the Escherichia coli-streptococcus shuttle vector pTG222, into which the promoterless chloramphenicol acetyltransferase gene of Bacillus pumilus (cat-86) was cloned. Random Sau3A fragments f...
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Background: Probiotics have attracted a great attention aiming to develop natural non-toxic antioxidants, because of their role in decreasing the risk of reactive oxygen species (ROS) accumulation. Objectives: The purpose of this study was to assess the antioxidant activity of a probiotic Streptococcus salivarius ssp thermophillus (St.sa) and to evaluate its protective effect against the ...
متن کاملExpression of antisense RNA targeted against Streptococcus thermophilus bacteriophages.
Antisense RNA complementary to a putative helicase gene (hel3.1) of a cos-type Streptococcus thermophilus bacteriophage was used to impede the proliferation of a number of cos-type S. thermophilus bacteriophages and one pac-type bacteriophage. The putative helicase gene is a component of the Sfi21-type DNA replication module, which is found in a majority of the S. thermophilus bacteriophages of...
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The hydrolysis of urea by urease enzyme of oral bacteria is believed to have a major impact on oral microbial ecology and to be intimately involved in oral health and diseases. To begin to understand the biochemistry and genetics of oral ureolysis, a study of the urease of Streptococcus salivarius, a highly ureolytic organism which is present in large numbers on the soft tissues of the oral cav...
متن کاملsynthesis and characterization of potentially biological active cyclometallated organoplatinum(ii) complexes
this work is presented in five parts. in the first part preparation of the starting complex [pt(c^n)cl(dmso)], 1, in which c^n = n(1),c(2?)-chelated, deprotonated 2-phenylpyridine, and dmso = dimethylsulfoxide, and its reaction with 1 equiv of the biphosphine ligands bis(diphenylphosphino)amine, dppa, or bis(diphenylphosphino)methane, dppm, to give the complex [pt(c^n)cl(dppa)], 2, or [pt(c^n)c...
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ژورنال
عنوان ژورنال: Le Lait
سال: 1990
ISSN: 0023-7302
DOI: 10.1051/lait:199029