Query: NC_010682:288415 Ralstonia pickettii 12J chromosome 1, complete sequence
Lineage: Ralstonia pickettii; Ralstonia; Burkholderiaceae; Burkholderiales; Proteobacteria; Bacteria
General Information: Ralstonia pickettii 12J was isolated from copper-contaminated sediment from a lake in Michigan, USA. In addition to being highly resistant to copper, strain 12J is also resistant to zinc and cadmium. Ralstonia pickettii can be isolated from a wide range of environmental and clinical samples. This species is a nocosomial pathogen. It is associated with infections caused by contaminated solutions, such as distilled water and intravenous solutions. Ralstonia pickettii strains resistant to heavy metals have also been isolated from heavy metal contaminated environments.
Subject: NC_004631:4300457 Salmonella enterica subsp. enterica serovar Typhi Ty2, complete
Lineage: Salmonella enterica; Salmonella; Enterobacteriaceae; Enterobacteriales; Proteobacteria; Bacteria
General Information: This pathogenic strain of Salmonella typhi was isolated in the early 1970s. It contains no multidrug resistance plasmids and has been used for vaccine development. This serovar is a human-specific organism that causes the life-threatening illness Typhoid fever which is acquired by coming into contact with contaminated food or water. Annually, 17 million people are infected, with 600,000 fatalities, mostly in developing countries. It contains multiple fimbrial operons that may be used to create extracellular appendages for attachment and entry into host intestinal epithelial cells. Causes enteric infections. This group of Enterobactericiae have pathogenic characteristics and are one of the most common causes of enteric infections (food poisoning) worldwide. They were named after the scientist Dr. Daniel Salmon who isolated the first organism, Salmonella choleraesuis, from the intestine of a pig. The presence of several pathogenicity islands (PAIs) that encode various virulence factors allows Salmonella spp. to colonize and infect host organisms. There are two important PAIs, Salmonella pathogenicity island 1 and 2 (SPI-1 and SPI-2) that encode two different type III secretion systems for the delivery of effector molecules into the host cell that result in internalization of the bacteria which then leads to systemic spread.