Query: NC_014121:489500 Enterobacter cloacae subsp. cloacae ATCC 13047 chromosome, complete Lineage: Enterobacter cloacae; Enterobacter; Enterobacteriaceae; Enterobacteriales; Proteobacteria; Bacteria General Information: Enterobacter species are found in natural environments such as water, sewage, soil, and vegetables; some species are found in human and animal species. Enterobacter cloacae is a prevalent nosocomial pathogen as it is highly resistant to disinfectants and antimicrobial agents. E.cloacae subsp. cloacae strain ATCC 13047 was isolated from human cerebrospinal fluid in 1890 and is the type strain. These "ICU bugs" cause significant morbidity and mortality, and infection management is complicated by multiple antibiotic resistance. These bacteria possess inducible beta-lactamases, which are undetectable in vitro but are also responsible for resistance during treatment.
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General Information: This genus is named for the Japanese scientist (Shiga) who discovered them in the 1890s. They are closely related to the Escherichia group, and may be considered the same species. Shigella spp. are human-specific pathogens that are transmitted via contaminated food and water and are the leading causes of endemic bacillary dysentery, and over 1 million deaths worldwide are attributed to them. The bacteria infect the epithelial lining of the colon, causing acute inflammation by entering the host cell cytoplasm and spreading intercellularly. are extremely virulent organisms that require very few cells in order to cause disease. Both the type III secretion system, which delivers effector molecules into the host cell, and some of the translocated effectors such as the invasion plasmid antigens (Ipas), are encoded on the plasmid. The bacterium produces a surface protein that localizes to one pole of the cell (IcsA) which binds to and promotes actin polymerization, resulting in movement of the bacterium through the cell cytoplasm, and eventually to neighboring cells, which results in inflammatory destruction of the mucosal lining. This organism, along with Shigella sonnei, is the major cause of shigellosis in industrialized countries and is responsible for endemic infections.