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- W1990241475 abstract "Many strains of the soil bacterium Bacillus subtilis are capable of producing and being resistant to the antibiotic sublancin because they harbor the Spβ prophage. This 135 kb viral genome is integrated into the circular DNA chromosome of B. subtilis, and contains genes for the production of and resistance to sublancin. We investigated the role of SigY in sublancin production and resistance, finding that it is important for efficient maintenance of the Spβ prophage. We were unable to detect the prophage in mutants lacking SigY. Additionally, these mutants were no longer able to produce sublancin, were sensitive to killing by this factor, and displayed a delay in sporulation. Wild-type cells with normal SigY activity were found to partially lose the Spβ prophage during growth and early sporulation, suggesting a mechanism for the bistable outcome of sibling cells capable of killing and of being killed. The appropriate regulation of SigY appears to be essential for growth as evidenced by the inability to disrupt the gene for its putative antisigma. Our results confirm a role for SigY in antibiotic production and resistance, as has been found for other members of the extracytoplasmic function sigma factor family in B. subtilis, and shows that this role is achieved by affecting maintenance of the Spβ prophage." @default.
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- W1990241475 date "2012-06-01" @default.
- W1990241475 modified "2023-10-05" @default.
- W1990241475 title "The Extracytoplasmic Function Sigma Factor SigY Is Important for Efficient Maintenance of the Spβ Prophage That Encodes Sublancin in<i>Bacillus subtilis</i>" @default.
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- W1990241475 doi "https://doi.org/10.1089/dna.2011.1513" @default.
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