Query: NC_009009:1295607 Streptococcus sanguinis SK36, complete genome Lineage: Streptococcus sanguinis; Streptococcus; Streptococcaceae; Lactobacillales; Firmicutes; Bacteria General Information: This strain was isolated from human dental plaque in 1980 and is virulent in a rat model. Indigenous oral bacteria that causes dental decay and possibly endocarditis. Most streptococci are facultative anaerobes, and some are obligate anaerobes. Serologic grouping is based on antigenic differences in cell wall carbohydrates, in cell wall pili-associated protein, and in the polysaccharide capsule in group B streptococci. This microbe is found associated with human oral bacterial communities and can colonize the dental surfaces, aiding other organisms in attachment. Progression of caries and periodontal disease are associated with this microbe as is endocarditis which can lead to death.
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General Information: Use in fermentation of food products. A distinctive characteristic of pediococci is their ability to form tetrads via cell division in two perpendicular directions in a single plane. Like other lactic acid bacteria, species of Pediococcus are acid tolerant, cannot synthesize porphyrins, and possess a strictly fermentative (homofermentative) facultatively anaerobic metabolism with lactic acid as the major metabolic end product. They also occur in such food products as cured meat, raw sausages, and marinated fish, and are are used for biotechnological processing and preservation of foods. This bacterium can be isolated from a variety of plant materials and bacterial-ripened cheeses. This organism is used as an acid producing starter culture in the fermentation of some sausages, cucumbers, green beans, soy milk, and silage. Some strains have been reported to contain several (3-5) resident plasmids that render the bacterium capable of fermenting some sugars (raffinose, melibiose, and sucrose), as well as producing bacteriocins.