Pre_GI: SWBIT SVG BLASTP

Query: NC_002935:781172 Corynebacterium diphtheriae NCTC 13129, complete genome

Lineage: Corynebacterium diphtheriae; Corynebacterium; Corynebacteriaceae; Actinomycetales; Actinobacteria; Bacteria

General Information: This strain was isolated in 1997 from the pharyngeal membrane of a 72-year-old unimmunized UK female with clinical diphtheria acquired during a short Baltic cruise. Causative agent of diphtheria. They may be found as members of the normal microflora of humans, where these bacteria find a suitable niche in virtually every anatomic site. This organism is the best known and most widely studied species of the genus. It is the causal agent of the disease diphtheria, a deadly infectious disease spreading from person to person by respiratory droplets from the throat through coughing and sneezing. In the course of infection, the bacteria invade and colonize tissues of the upper respiratory tract, proliferate and produce exotoxin that inhibits protein synthesis and causes local lesions and systemic degenerative changes in the heart, muscles, peripheral nerves, liver and other vital organs. In 1951, Victor Freeman discovered that pathogenic (toxigenic) strains. Moreover, later it was found that the gene for toxin production is located in the DNA of the B-type phage.

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Subject: NC_011896:2502000 Mycobacterium leprae Br4923, complete genome

Lineage: Mycobacterium leprae; Mycobacterium; Mycobacteriaceae; Actinomycetales; Actinobacteria; Bacteria

General Information: This strain was isolated from a human skin biopsy in Brazil, and passaged in nude mice and armadillos. The bacterium is a close relative of M. tuberculosis. However, compared to the latter, the genome of M. leprae is smaller due to reductive genome evolution, with many important metabolic activities including siderophore production, part of the oxidative chain, most of the microaerophilic and anaerobic respiratory chains, and numerous catabolic systems and their regulatory circuits eliminated due to extensive recombination events between dispersed repetitive sequences. It is evident that this species has undergone massive genome reduction over time as a result of its parasitic nature, discarding more than half its genes and rendering it the most striking example of genome reduction in a microbial pathogen.