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J Gen Microbiol. 1986 Jun;132(6):1703-7.

RecE-dependent lysogenic induction in the absence of repressor in Bacillus subtilis non-complementing diploids.

Abstract

The RecE protein of Bacillus subtilis, known to be required for induction of the SOS response and of phi 105 prophage, was shown to be involved in mitomycin C induction of B. subtilis diploid lysogens carrying a silent phi 105 prophage in their unexpressed chromosome. These stable non-complementing diploid lysogens, formed by protoplast fusion and regeneration, did not synthesize repressor, so that the induction observed must have resulted from RecE-dependent activation of the prophage rather than from RecE-dependent inactivation of repressor. Mitomycin C treatment does not induce permanent expression of the silent chromosome, so the activation seems to be temporary, perhaps reflecting the action of an SOS function under RecE control.

PMID:
3100715
DOI:
10.1099/00221287-132-6-1703
[Indexed for MEDLINE]

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