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. 1980 Mar;141(3):1298–1304. doi: 10.1128/jb.141.3.1298-1304.1980

Inhibition of transformation in Streptococcus pneumoniae by lysogeny.

D J Moynet, G J Tiraby
PMCID: PMC293827  PMID: 7364727

Abstract

Streptococcus pneumoniae R6X was lysogenized with bacteriophage 304 isolated after mitomycin induction of an ungrouped alpha-hemolytic streptococcus. Lysogenized pneumococci lost their capacity to undergo genetic transformation: transformability was restored after cells were spontaneously cured of their prophage. Both lysogens and nonlysogens produced activator substance (competence factor), and both bound deoxyribonucleic acid in a deoxyribonuclease-resistant form. However, nonlysogens retained deoxyribonucleic acid after washing, whereas lysogens did not. The latter did not liberate phage nor (unlike nonlysogens) degrade transforming deoxyribonucleic acid and contained normal levels of endonuclease.

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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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