Efficient Electrotransformation System and Gene Targeting in Pyogenic Streptococci(Biochemistry & Molecular Biology)
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概要
- 論文の詳細を見る
Hemolytic streptococci are lacking in natural competence for uptake of DNA, and existing electrotransformation methods are still ineffective for most strains. By optimizing biological and electric parameters of electroporation, we established a simple, efficient, and reproducible transformation method for streptococcal cells. The major factor was an increase in the electric field strength. All tested streptococci (6 group A strains and one group C strain) were successfully transformed, and the maximal efficiency was higher than 1 × 10^7 transformants per μg of plasmid DNA. Targeted inactivation of the chromosomal genes of group A and C streptococci was achieved, using the electrotransformation method. The slo^- or sagB^- mutants constructed by the gene-targeting showed elevated competence for electrotransformation. Availability of the electrotransfer system for cloning and analysis of streptococcal genes is discussed.
- 社団法人日本農芸化学会の論文
- 2003-10-23
著者
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Kimoto Hisashi
Department Of Applied Physics And Chemistry Fukui Institute Of Technology
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Kimoto Hisashi
Department Of Biochemistry I Fukui Medical University
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Taketo Akira
Department Of Applied Physice And Chemistry
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