Abstract
Permeabilized cells able to induce prophage were obtained by plasmolysis and preincubation of the cells in a reaction mixture which allows protein synthesis. These cells became permeable to low-molecular-weight proteins and oligonucleotides. We found that deoxyribonucleases (pancreatic deoxyribonuclease and micrococcal nuclease) triggered prophage (phi 80) induction. This deoxyribonuclease-triggered induction was completely dependent upon the presence of functional recBC genes in the lysogen, regardless of the recombination proficiency determined by recBC and sbcB genes. The possible role of recBC-deoxyribonuclease in prophage induction and recombination is discussed.
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