Pre_GI: SWBIT SVG BLASTP

Query: NC_004557:162670 Clostridium tetani E88, complete genome

Lineage: Clostridium tetani; Clostridium; Clostridiaceae; Clostridiales; Firmicutes; Bacteria

General Information: This strain is a virulent nonsporulating variant of strain Massachusetts used in vaccine production. Causes tetanus. This genus comprises about 150 metabolically diverse species of anaerobes that are ubiquitous in virtually all anoxic habitats where organic compounds are present, including soils, aquatic sediments and the intestinal tracts of animals and humans. This shape is attributed to the presence of endospores that develop under conditions unfavorable for vegetative growth and distend single cells terminally or sub-terminally. Spores germinate under conditions favorable for vegetative growth, such as anaerobiosis and presence of organic substrates. It is believed that present day Mollicutes (Eubacteria) have evolved regressively (i.e., by genome reduction) from gram-positive clostridia-like ancestors with a low GC content in DNA. Known opportunistic toxin-producing pathogens in animals and humans. Some species are capable of producing organic solvents (acetone, ethanol, etc,), molecular hydrogen and other useful compounds. This organism causes tetanus (lockjaw) in humans. At the tissue level, the bacterium then releases an exotoxin called tetanospasmin that causes certain nervous system irregularities by means of retrograde tramsmission through neurons to the brain. If nervous impulses cannot be checked by normal inhibitory mechanisms, it produces the generalized muscular spasms characteristic of tetanus.

Subject: NC_008011:663958 Lawsonia intracellularis PHE/MN1-00, complete genome

Lineage: Lawsonia intracellularis; Lawsonia; Desulfovibrionaceae; Desulfovibrionales; Proteobacteria; Bacteria

General Information: Lawsonia intracellularis PHE/MN1-00 was isolated from intestinal mucosal lesions in pigs that had proliferative enteropathy (PE). When introduced into health pigs, this organism produced the clinical and histological signs of PE. Causative agent for proliferative enteropathy in swine. This organism causes proliferative enteropathy (ileitis) in swine and other domesticated animals resulting in severe losses each year. This obligate intracellular pathogen infects the mucosa of the lower intestinal tract by initially infecting crypt cells, which are precursors that normally grow and divide in order to replace the epithelial cells. Once infection occurs, the crypt cells are stimulated to grow and divide abnormally, resulting in the proliferative phenotype. In severe cases of the disease the entire bowel can become affected and persist for up to 40 days, greatly affecting the host animal.