Query: NC_017208:64500 Bacillus thuringiensis serovar chinensis CT-43 chromosome, complete Lineage: Bacillus thuringiensis; Bacillus; Bacillaceae; Bacillales; Firmicutes; Bacteria General Information: This organism, also known as BT, is famous for the production of an insecticidal toxin. The bacterium was initially discovered as a pathogen of various insects and was first used as an insecticidal agent in the early part of this century. This organism, like many other Bacilli, is found in the soil, where it leads a saprophytic existence, but becomes an opportunistic pathogen of insects when ingested. The specific activity of the toxin towards insects and its lack of toxicity to animals has made this organism a useful biocontrol agent. The delta-endotoxin, which is produced during the sporulation part of the life cycle, causes midgut paralysis and disruption of feeding by the infected insect host. The delta-endotoxin, which is produced during the sporulation part of the life cycle, causes midgut paralysis and disruption of feeding by the infected insect host. The delta-endotoxin, which is produced during the sporulation part of the life cycle, causes midgut paralysis and disruption of feeding by the infected insect host. The presence of a parasporal crystal, which is outside the exosporium of the endospore, is indicative of production of the toxin, and serves as a marker for this species.Activation of the toxin typically requires a high pH environment such as the alkaline environments in insect midguts followed by proteolysis.
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General Information: Isolated from the cervix of an asymptomatic female. Opportunistic pathogen. Bacteria belonging to the Chlamydiales group are obligate intracellular parasites of eukaryotic cells. They are found within vertebrates, invertebrate cells, and amoebae hosts. Chlamydiae are one of the commonest causes of sexually transmitted diseases (STDs) and if left untreated may cause infertility in women. They are transmitted by direct contact or aerosols, and can cause various diseases, while also being able to coexist with the host in an apparently asymptomatic state. This species causes infection that leads to blindness and sexually transmitted diseases in humans. There are 15 serovariants that preferentially cause disease in either the eye or the urogenital tract. The trachoma (infection of the mucous membrane of the eyelids) biovars are noninvasive and can cause blinding trachoma (variants A, B, Ba, and C), or sexually transmitted diseases (variants, D, E, F, G, H, I, J, and K). The lymphogranuloma venereum biovars (variants L1, L2, and L3) can cross the epithelial cells of mucous membranes and then travel through the lymphatic system where they multiply within mononuclear phagocytes found within the lymph nodes. This is a trachoma biovar, serovar D strain.