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. 1982 May;42(2):357–364. doi: 10.1128/jvi.42.2.357-364.1982

Restriction and modification in Bacillus subtilis: effects on transfection under marker rescue conditions.

S Bron, E Luxen, G Venema
PMCID: PMC256860  PMID: 6283159

Abstract

The role of homology between donor and recipient DNAs in the protection of transfecting DNA against restriction by competent Bacillus subtilis R cells was studied under marker rescue conditions with modified helper phage. By comparing restriction under conditions of preinfection marker rescue and superinfection marker rescue, the significance of DNA homology during the initial stages of DNA processing by competent cells could be studied. The results showed that both in preinfection and in superinfection, complete protection against restriction of transfectants produced via rescue by the modified homologous helper chromosome occurred. Even up to 90 min after entry, DNA entering the helper-mediated pathway of transfection was not affected by restriction. The significance of these findings is discussed in the general context of the role of DNA homology between donor and recipient on the fate of donor DNA in competent B. subtilis, in particular in relation to the effects on restriction.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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