Query: NC_005085:1269787 Chromobacterium violaceum ATCC 12472, complete genome
Lineage: Chromobacterium violaceum; Chromobacterium; Chromobacteriaceae; Neisseriales; Proteobacteria; Bacteria
General Information: Chromobacterium violaceum ATCC 12472 was isolated from freshwater in Malaya. Common tropical soil bacterium. This facultative organism is an abundant environmental bacterium that lives in tropical and subtropical regions in the soil and water. It has exploitable properties including the ability to produce a bactericidal purple pigment, violacein, as well as the ability to produce a bioplastic and to biologically solubilize gold from the environment. It is occasionally pathogenic in immunocompromised individuals or children where it may cause diarrhea, but sometimes causes septicemia and is at times fatal.
Subject: NC_006142:33268 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.