Pre_GI: SWBIT SVG BLASTN

Query: NC_007613:864084 Shigella boydii Sb227, complete genome

Lineage: Shigella boydii; Shigella; Enterobacteriaceae; Enterobacteriales; Proteobacteria; Bacteria

General Information: This strain is an isolate from an epidemic that took place in China in the 1950s. Causes dysentery. This genus is named for the Japanese scientist (Shiga) who first discovered these organisms in the 1890s. They are closely related to the Escherichia group, and may be considered the same species. These organisms are human-specific pathogens that are transmitted via contaminated food and water and are the leading causes of endemic bacillary dysentery, causing over 160 million cases of infection and 1 million deaths yearly worldwide. 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 can cause an active infection after a very low exposure. 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. Shigella boydii is uncommon except in India, where it was first isolated. Progression to clinical dysentery occurs in most patients infected with this organism.

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BLASTN Alignment.txt

Subject: NC_011059:1896593 Prosthecochloris aestuarii DSM 271, complete genome

Lineage: Prosthecochloris aestuarii; Prosthecochloris; Chlorobiaceae; Chlorobiales; Chlorobi; Bacteria

General Information: This species is a green sulfur bacterium which forms sedimentary biofilm layers. It has been shown to be associated with coral killed by Black-Band Disease (BBD) a microbial infection of larger coral species. This is a concern for reef conservationists as the larger species are responsible for coral scaffolds, and their reduction by disease would have considerable impact on the reef structure. While there is currently no cause-and-effect link between Prosthecochloris aestuarii and BBD, the species was found on coral which was killed by the disease and was not found on healthy coral or in the surrounding seawater.