Query: NC_008555:2628858 Listeria welshimeri serovar 6b str. SLCC5334, complete genome
Lineage: Listeria welshimeri; Listeria; Listeriaceae; Bacillales; Firmicutes; Bacteria
General Information: Nonpathogenic bacterium. This organism is a nonpathogenic Listeria found in soil, water, food, and sewage. First isolated from decaying plants. L. welshimeri bacteria are small (0.5 to 2.0 μm), non-spore-forming, gram-positive rods which are motile below 30°C by means of peritrichous flagella.
Subject: NC_010120:2029880 Neisseria meningitidis 053442, complete genome
Lineage: Neisseria meningitidis; Neisseria; Neisseriaceae; Neisseriales; Proteobacteria; Bacteria
General Information: Causes septicemia and meningitis. The second of two pathogenic Neisseria, this organism causes septicemia and is the leading cause of life-threatening meningitis (inflammation of the meninges, the membrane surrounding the brain and spinal cord) in children. This organism typically residies in the nasopharynx cavity but can invade the respiratory epthelial barrier, cross into the bloodstream and the blood brain barrier, and cause inflammation of the meninges. Pathogenicity factors include the surface proteins (porins and opacity proteins), and the type IV pilus (which is also found in Neisseria gonorrhoeae). Pathogenicity factors include the surface proteins (porins and opacity proteins), and the type IV pilus (which is also found in Neisseria gonorrhoeae). This organism, like Neisseria gonorrhoeae, is naturally competent, and protein complexes at the cell surface recognize the uptake signal sequence in extracellular DNA, an 8mer that is found at high frequency in Neisseria chromosomal DNA.