prophage

The presence of prophage DNA constitutes a genetic alteration to the host cell .

前噬菌体导致宿主细胞基因型改变。

Prophage types and corresponding distribution had been defined preliminary .

初步明确了中国存在的原噬菌体类型及其在不同地区的分布情况。

New Methods for Determining Induction Rate of λ Prophage in Lysogenic Bacteria

测定λ原噬菌体诱导频率的新方法

Induction and Isolation of the Mutants Deleted in λ Prophage DNA

λ原噬菌体缺失突变株的诱导和分离

Two new methods , colony counting method and plate inducing method , were established for determining ultraviolet induction rate of λ prophage in the present study .

本文报道两种测定λ原噬菌体紫外诱导频率的新方法&菌落计数法和平板诱导法。

The effect of GSH on the ultraviolet ( UV ) induction of lambda prophage was investigated in lysogenic Escherichia coli in present study .

本研究详细探讨了谷胱甘肽基因在溶原菌中的表达及对λ原噬菌体紫外诱导的影响。

It was found that HX - XO system could induce lambda prophage from lysogenic state to lytic growth as well as UV irradiation .

本研究发现HX&XO体系如同紫外辐射一样，能诱导λ原噬菌体从溶原状态进入裂解生长。

This recombinant plasmid will be a useful tool in the studies of the inductive mechanism of λ prophage and the repair of cells damaged by UV-irradiation .

这种重组质粒将在进一步研究λ原噬菌体的诱导机理以及受紫外辐射损伤细胞的修复作用等方面成为有效的工具。

The repressor gene and its allele-a temperature sensitive mutant have been cloned from the defective prophage PBSX of Bacillus subtilis by means of PCR technique .

本研究利用聚合酶链式反应技术，成功地克隆了枯草芽孢杆菌缺陷型原噬菌体PBSX阻遏基因及其温度敏感型等位基因。

The results indicated that the recA gene showed a remarkable physiological function in the λ lysogenic bacteria . It could induce the λ prophage to enter the lysis cycle from lysogenic state .

结果表明recA基因在溶原菌中表现出明显的生理功能，能使λ原噬菌体从溶原状态进入裂解循环。

Sequence alignment and the distribution of E-type indicated that the prophage was more active and strains were also more complex in high altitude regions , like Yunnan and Sichuan , than that in low altitude regions .

序列比对及扩增电泳类型分布分析表明，云南、四川等高海拔地区种群与其他低海拔地区种群相比，株系更为复杂，且原噬菌体活性更为丰富。

These results indicate that GSH can significantly inhibit the UV induction of lambda prophage , and that this effect is correlated to its capacity to scavenge free radicals generated in the process of UV irradiation .

以上结果说明，自由基在入原噬菌体紫外诱导中起着重要的作用，内源和外源的谷胱甘肽均可以有效地清除诱导过程中产生的自由基，从而抑制λ原噬菌体的紫外诱导。

The results of this study confirm the instability of prophage , and suggested that the prophage plays important role in the pathogenicity of O157 ∶ H7 , and in the evolution of pathogenic bacteria .

该研究证实了编码Stx的原噬菌体具有不稳定性，原噬菌体对O157的致病性具有重要作用，也提示原噬菌体在致病菌的进化过程中也具有重要作用。