Shigella dysenteriae
From DrugPedia: A Wikipedia for Drug discovery
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==Surface Characteristics== | ==Surface Characteristics== | ||
Chemically, the O-antigen is a polysaccharide chain of variable length, built up by repetitive sequences of tetra- to hexasaccharides. It consists of a basic tetrasaccharide repeating unit consisting of three rhamnoses and one N-acetylglucosamine was common to all S. flexneri strains (except serotype 17): -2)-α-L-Rhap-(1-->2)-α-L-Rhap-(1-->3)-α-L-Rhap-(1-->3)-β-D-GlcpNAc-(1--> | Chemically, the O-antigen is a polysaccharide chain of variable length, built up by repetitive sequences of tetra- to hexasaccharides. It consists of a basic tetrasaccharide repeating unit consisting of three rhamnoses and one N-acetylglucosamine was common to all S. flexneri strains (except serotype 17): -2)-α-L-Rhap-(1-->2)-α-L-Rhap-(1-->3)-α-L-Rhap-(1-->3)-β-D-GlcpNAc-(1--> | ||
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==Transmission== | ==Transmission== | ||
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Current revision
Shigella dysenteriae
They are Gram-negative, non-spore-forming, facultatively anaerobic, non-motile bacteria.
| Kingdom | Bacteria |
|---|---|
| Phylum | Proteobacteria |
| Class | Gamma Proteobacteria |
| Order | Enterobacteriales |
| Family | Enterobacteriaceae |
| Genus | Shigella |
| Species | S. dysenteriae |
| Binomial | Shigella dysenteriae |
Contents |
[edit] Surface Characteristics
Chemically, the O-antigen is a polysaccharide chain of variable length, built up by repetitive sequences of tetra- to hexasaccharides. It consists of a basic tetrasaccharide repeating unit consisting of three rhamnoses and one N-acetylglucosamine was common to all S. flexneri strains (except serotype 17): -2)-α-L-Rhap-(1-->2)-α-L-Rhap-(1-->3)-α-L-Rhap-(1-->3)-β-D-GlcpNAc-(1-->
[edit] Transmission
S. dysenteriae, spread by contaminated water and food. Contamination is often caused by bacteria on unwashed hands during food preparation, or soiled hands reaching the mouth
[edit] Pathogenic Activity
They causes the most severe dysentery because of its potent and deadly Shiga toxin, but other species may also be dysentery agents.
