Actinobacillus actinomycetemcomitans harbours type IV secretion system genes on a plasmid and in the chromosome.


Nine contiguous genes encoding a potential type IV secretion system have been identified in the chromosome of Actinobacillus actinomycetemcomitans strain VT747 and on a plasmid (pVT745) in strain VT745. Seven of these genes encode predicted proteins that share significant homology with type IV secretion proteins in Bordetella pertussis (ptl operon… (More)


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