Genetic analysis of fructan-hyperproducing strains of Streptococcus mutans
نویسندگان
چکیده
منابع مشابه
Nature of the fructan of Streptococcus mutans OMZ 176.
The fructan of Streptococcus mutans OMZ 176 was shown to have a levan structure by comparing the chromatographic mobilities of the saccharides produced by partial acid hydrolysis of ghe fructan and known levan and inulin. This was confirmed by using concanavalin A as a lectin in a double-diffusion gel technique.
متن کاملGenetic transformation of Streptococcus mutans.
Three strains of Streptococcus mutans belonging to serotypes a, c, and f were transformed to streptomycin resistance by deoxyribonucleic acids derived from homologous and heterologous streptomycin-resistant strains of S. mutans and Streptococcus sanguis strain Challis. Homologous transformation of S. mutans was less efficient than heterologous transformation by deoxyribonucleic acids from other...
متن کاملAntagonistic action of indigenous Streptococcus mutans strains.
Dental caries is an infectious process which ultimately destroys the tooth. Streptococcus mutans is considered to be the main agent causing this disease. If microorganisms with antagonistic action on S. mutans were found, they might provide a way of avoiding or controlling the disease. Within the framework of the Oral Microbial Ecology approach, the aim of this project was to identify S. mutans...
متن کاملStreptococcus mutans strains harboring collagen-binding adhesin.
A previously unidentified 120-kDa protein was detected in Streptococcus mutans strain Z1 and was involved in the cold-agglutination of the strain. We have identified the gene, designated cnm, as being involved in the agglutination of strain Z1 following random mutagenesis. The amino acid sequence of the deduced Cnm protein exhibited high similarity to those of collagen-binding adhesins from sta...
متن کاملGenetic regulation of fructosyltransferase in Streptococcus mutans.
Streptococcus mutans possesses several extracellular sucrose-metabolizing enzymes which have been implicated as important virulence factors in dental caries. This study was initiated to investigate the genetic regulation of one of these enzymes, the extracellular fructosyltransferase (Ftf). Fusions were constructed with the region upstream of the S. mutans GS5 Ftf gene (ftf) and a promoterless ...
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ژورنال
عنوان ژورنال: Infection and Immunity
سال: 1994
ISSN: 0019-9567,1098-5522
DOI: 10.1128/iai.62.7.2679-2686.1994