Inhibition of transformation in Streptococcus pneumoniae by lysogeny.
AUTOR(ES)
Moynet, D J
RESUMO
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.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=293827Documentos Relacionados
- Inhibition of transformation and transfection in Haemophilus influenzae Rd9 by lysogeny.
- Inhibition of Transformation in Group H Streptococci by Lysogeny
- Characterization of Pseudomonas aeruginosa mutants deficient in the establishment of lysogeny.
- Transformation of encapsulated Streptococcus pneumoniae.
- Polarity of recombination in transformation of Streptococcus pneumoniae