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Helicobacter infection
Helicobacter pylori is the etiologic agent of acute gastritis, type B gastritis, peptic ulcer, chronic atrophic gastritis, gastric-MALT B-cell lymphomas, and gastric cancer.
- Infection with H. pylori induces acute gastritis and follows chronic gastritis (type B gastritis).
- Colonization of H. pylori makes chan |
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Staphylococcus aureus
Gram-positive, cluster-forming coccus (golden yellow colony on agar); nonmotile, nonsporeforming facultative anaerobe; fermentation of glucose produces mainly lactic acid; ferments mannitol (distinguishes from Staphylococcus epidermidis); catalase and coagulase positive; normal flora of humans found on nasal passages, skin and mucous membran |
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RdRp (RNA dependant RNA polymerase) [Norovirus]
C-terminus of Norovirus (NV) ORF1 contains a motif in the RNA dependant RNA polymerase (RdRp) that is conserved among various plus-strand RNA viruses. Found in most RdRps of positive-strand RNA viruses, GDD is important for metal binding and is considered to be the catalytic site of the enzyme. The enzymatic activity of norovirus RdRp depended on M |
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