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[紫外线诱导枯草芽孢杆菌细胞中腺嘌呤自主“真”回复突变体]

[UV-light induction of "true" revertants to adenine independence in Bacillus subtilis cells].

作者信息

Lotareva O V

出版信息

Genetika. 1978 Nov;14(11):2046-8.

PMID:102563
Abstract

The UV-irradiation of Bacillus subtilis Mu5u8u16 (met5 leu8 purA) induces with relatively high frequency the revertants to adenine independence (Ade+) which form the rapidly growing morphologically uniform colonies on the solid selective medium. The genetic analysis of a portion of UV-induced Ade+ revertants (crosses in transformation system) has cleared up that their DNA does not contain the original mutation ade16. This means that they arise as the result of "true" reversions. This reversion in purA gene can serve as a good model for the study of UV-induced mutagenesis in a proximal structural locus of Bac. subtilis chromosome.

摘要

枯草芽孢杆菌Mu5u8u16(met5 leu8 purA)经紫外线照射后,能以相对较高的频率诱导出腺嘌呤非依赖型(Ade+)回复突变体,这些突变体在固体选择培养基上形成生长迅速、形态均一的菌落。对部分紫外线诱导的Ade+回复突变体进行遗传分析(转化系统中的杂交实验)后发现,它们的DNA中不包含原始的ade16突变。这意味着它们是“真正”回复突变的结果。purA基因中的这种回复突变可作为研究枯草芽孢杆菌染色体近端结构基因座中紫外线诱导诱变的良好模型。

相似文献

1
[UV-light induction of "true" revertants to adenine independence in Bacillus subtilis cells].[紫外线诱导枯草芽孢杆菌细胞中腺嘌呤自主“真”回复突变体]
Genetika. 1978 Nov;14(11):2046-8.
2
[Relationship of the "fixation" of UV-induced true reversions in the proximal locus of Bacillus subtilis chromosome and of supressor mutations on DNA replication].[紫外线诱导的枯草芽孢杆菌染色体近端位点真回复突变的“固定”与DNA复制上抑制基因突变的关系]
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[UV-mutagenesis in Bacillus subtilis. VII. Induction of auxotrophic mutants].[枯草芽孢杆菌中的紫外线诱变。VII. 营养缺陷型突变体的诱导]
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[UV-mutagenesis in Bacillus subtilis. II. Repair of the biological activity of cellular DNA in conditions determining the sensitivity of cells to the mutagenic action of ultraviolet light].[枯草芽孢杆菌中的紫外线诱变。II. 在决定细胞对紫外线诱变作用敏感性的条件下细胞DNA生物活性的修复]
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