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2006:
Franciosa Giovanna; Maugliani Antonella; Floridi Francesca; Aureli Paolo
A novel type A2 neurotoxin gene cluster in Clostridium botulinum strain Mascarpone.
FEMS microbiology letters 2006;
261(
1):.
The partial nucleotide sequence ( approximately 10 kb) of the cluster of genes encoding the botulinum neurotoxin complex in Clostridium botulinum type A strain Mascarpone was determined. The analysis revealed six ORFs (orfs), which were organized as in the type A2 and type A3 botulinum neurotoxin gene clusters of strains Kyoto-F and NCTC 2916, respectively. While the orfs at the proximal and distal ends of the sequence (orfX2 and bont/A genes) shared a high level of similarity with the corresponding sequences of strain Kyoto-F, the segment encompassing the orfX1 and botR/A genes within the sequence exhibited a higher degree of homology to the related region in strain NCTC 2916. The mosaic structure of the Mascarpone neurotoxin gene cluster suggests recombinational exchanges.
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