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Can J Microbiol. 1980 Nov;26(11):1328-33.

Prophage-mediated production of a bacteriocinlike substance by SP beta lysogens of Bacillus subtilis.

Abstract

Cultures of Bacillus subtilis lysogenic for the temperature bacteriophage SP beta release "betacin", a bacteriocinlike substance that inhibits B. subtilis strains which do not carry this phage. Production of betacin is blocked by mutations in the bet gene on the prophage and a second phage gene, tol, is apparently involved in making the lysogen itself tolerant to betacin. Mutations in a bacterial gene betR, located on the B. subtilis chromosome between metC and pyrD, render nonlysogens tolerant to betacin.

PMID:
6783280
[Indexed for MEDLINE]

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