Query: NC_002570:126500 Bacillus halodurans C-125, complete genome
Lineage: Bacillus halodurans; Bacillus; Bacillaceae; Bacillales; Firmicutes; Bacteria
General Information: Strain C-125 (JCM9153) was isolated in 1977 and is the most well studied alkaliphilic Bacillus organism. Alkaliphilic bacterium. This organism is similar to Bacillus subtilis but is alkaliphilic, grows poorly at neutral pH, and very well at pH >9.5. This bacterium produces a peptidoglycan that contains teichuronic peptides consisting of polyglutamic and polyglucuronic acids that counteract the halophilic environment.
Subject: NC_006142:243899 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.