Abstract：
:Corynebacterium diphtheriae is a Gram-positive, non-spore forming, non-motile, pleomorphic rod belonging to the genus Corynebacterium and the actinomycete group of organisms. The organism produces a potent bacteriophage-encoded protein exotoxin, diphtheria toxin (DT), which causes the symptoms of diphtheria. This potentially fatal infectious disease is controlled in many developed countries by an effective immunisation programme. However, the disease has made a dramatic return in recent years, in particular within the Eastern European region. The largest, and still on-going, outbreak since the advent of mass immunisation started within Russia and the newly independent states of the former Soviet Union in the 1990s. We have sequenced the genome of a UK clinical isolate (biotype gravis strain NCTC13129), representative of the clone responsible for this outbreak. The genome consists of a single circular chromosome of 2 488 635 bp, with no plasmids. It provides evidence that recent acquisition of pathogenicity factors goes beyond the toxin itself, and includes iron-uptake systems, adhesins and fimbrial proteins. This is in contrast to Corynebacterium's nearest sequenced pathogenic relative, Mycobacterium tuberculosis, where there is little evidence of recent horizontal DNA acquisition. The genome itself shows an unusually extreme large-scale compositional bias, being noticeably higher in G+C near the origin than at the terminus.
journal_name
Nucleic Acids Resjournal_title
Nucleic acids researchauthors
Cerdeño-Tárraga AM,Efstratiou A,Dover LG,Holden MT,Pallen M,Bentley SD,Besra GS,Churcher C,James KD,De Zoysa A,Chillingworth T,Cronin A,Dowd L,Feltwell T,Hamlin N,Holroyd S,Jagels K,Moule S,Quail MA,Rabbinowitsch Edoi
10.1093/nar/gkg874keywords:
subject
Has Abstractpub_date
2003-11-15 00:00:00pages
6516-23issue
22eissn
0305-1048issn
1362-4962journal_volume
31pub_type
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