Query: NC_014727:1292213 Lactobacillus delbrueckii subsp. bulgaricus ND02 chromosome,
Lineage: Lactobacillus delbrueckii; Lactobacillus; Lactobacillaceae; Lactobacillales; Firmicutes; Bacteria
General Information: This strain is isolated from traditional dairy products of minority nationalities in China. The subspecies bulgaricus is used as a starter culture for a number of fermented dairy products such as yogurt and Swiss and Italian-type cheeses, and is a thermophilic culture, where the optimum temperature is 42 C.
Subject: NC_003997:4116944 Bacillus anthracis str. Ames, complete genome
Lineage: Bacillus anthracis; Bacillus; Bacillaceae; Bacillales; Firmicutes; Bacteria
General Information: This well studied laboratory strain (Porton isolate) is not virulent due to the loss of the two plasmids, pXO1 and pXO2. Under starvation conditions this group of bacteria initiate a pathway that leads to endospore formation, a process that is thoroughly studied and is a model system for prokaryotic development and differentiation. Spores are highly resistant to heat, cold, dessication, radiation, and disinfectants, and enable the organism to persist in otherwise inhospitable environments. Under more inviting conditions the spores germinate to produce vegetative cells. This organism was the first to be shown to cause disease by Dr. Louis Pasteur (the organism, isolated from sick animals, was grown in the laboratory and then used to infect healthy animals and make them sick). This organism was also the first for which an attenuated strain was developed as a vaccine. Herbivorous animals become infected with the organism when they ingest spores from the soil whereas humans become infected when they come into contact with a contaminated animal. PA/LF and PA/EF complexes are internalized by host cells where the LF (metalloprotease) and EF (calmodulin-dependent adenylate cyclase) components act. At high levels LF induces cell death and release of the bacterium while EF increases host susceptibility to infection and promotes fluid accumulation in the cells.