Query: NC_011969:4993386 Bacillus cereus Q1 chromosome, complete genome
Lineage: Bacillus cereus; Bacillus; Bacillaceae; Bacillales; Firmicutes; Bacteria
General Information: Isolated from a deep-subsurface oil reservoir in the Daqing oil field in northeastern China. This strain is non-pathogenic, and has potential for industrial use. Bacillus cereus is a Gram-positive, spore-forming bacterium of the B.cereus group. It is closely related to Bacillus anthracis and Bacillus thuringiensis. Bacillus cereus is a ubiquitous soil organism and opportunistic human pathogen most commonly associated with food poisoning, causing diarrheic (late onset) or emetic (quick onset) outbreaks.
Subject: NC_006142:994753 Rickettsia typhi str. Wilmington, complete genome
Lineage: Rickettsia typhi; Rickettsia; Rickettsiaceae; Rickettsiales; Proteobacteria; Bacteria
General Information: This genus, like other Rickettsial organisms such as Neorickettsia and Anaplasma, is composed of obligate intracellular pathogens. The latter is composed of two organisms, Rickettsia prowazekii and Rickettsia typhi. The bacteria are transmitted via an insect, usually a tick, to a host organism, in this case humans, where they target endothelial cells and sometimes macrophages. They attach via an adhesin, rickettsial outer membrane protein A, and are internalized where they persist as cytoplasmically free organisms. Transovarial transmission (from mother to offspring) occurs in the invertebrate host. Rickettsia typhi causes murine typhus and is an obligate intracellular pathogen that infects both the flea vector and hosts such as human, rat, and mouse. In the flea vector, the bacterium penetrates the gut epithelial barrier and is found in the feces which become infective.