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2000:
Dineen S S; Bradshaw M; Johnson E A
Cloning, nucleotide sequence, and expression of the gene encoding the bacteriocin boticin B from Clostridium botulinum strain 213B.
Applied and environmental microbiology 2000;
66(
12):.
Boticin B is a heat-stable bacteriocin produced by Clostridium botulinum strain 213B that has inhibitory activity against various strains of C. botulinum and related clostridia. The gene encoding the bacteriocin was localized to a 3.0-kb HindIII fragment of an 18. 8-kb plasmid, cloned, and sequenced. DNA sequencing revealed the boticin B structural gene, btcB, to be an open reading frame encoding 50 amino acids. A C. botulinum strain 62A transconjugant containing the HindIII fragment inserted into a clostridial shuttle vector expressed boticin B, although at much lower levels than those observed in C. botulinum 213B. To our knowledge, this is the first demonstration and characterization of a bacteriocin from toxigenic group I C. botulinum.
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