Adaptive mutation: who's really in the garden?

Adaptive mutation: who's really in the garden?
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适应性突变:谁真正在花园里?

DOI:
10.1126/science.7716540
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发表时间:
1995
期刊:
影响因子:
56.9
通讯作者:
James A. Shapiro
James A. Shapiro
中科院分区:
综合性期刊1区
文献类型:
--
作者:
James A. Shapiro

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盲人钟表匠还是基因工程师哪一个是进化的最佳模型?适应性突变的争论为进化论引入了一个高科技元素。[照片B。Llewellyn/Uniphoto] lad-Z33菌株表达低水平的β-半乳糖苷酶活性,足以使选择平板上的细菌生长缓慢。Foster和Trimarchi证实了适应性lad-Z33回复依赖于共轭功能(13)。Peters、Bartoszyk和Benson通过证明recA和recD突变对适应性lad-Z33回复和选择性条件下质粒转移频率的影响之间的意想不到的相关性提供了新的机制见解(14)。从所有这些结果得出的一个主要结论是,适应性lad-Z33回复代表的不仅仅是压力下基本复制机制的故障。其他特定分子参与选择诱导的突变,恢复乳糖上的生长(即同源重组和质粒转移功能)。DNA加工活动的参与是
The blind watchmaker or the genetic engineer-which is the best model for evolutionary change? The adaptive mutation debate introduces a high tech element into evolutionary theory.[Photograph B. L1ewellyn/Uniphoto] lad-Z33 strains express low levels of B-galactosidase activity sufficient for slow bacterial growth on selection plates. Foster and Trimarchi confirm that adaptive lad-Z33 reversion depends on conjugation functions (13). Peters, Bartoszyk, and Benson provide new mechanistic insight by demonstrating an unexpected correlation between the effects of recA and recD mutations on adaptive lad-Z33 reversion and on the frequency of plasmid transfer under selective conditions (14).A major conclusion from all these results is that adaptive lad-Z33 reversion represents more than malfunction of the basic replication machinery under stress. Additional specific molecules participate in selection-induced mutations that restore growth on lactose (namely, homologous recombination and plasmid transfer functions). The participation of DNA-processing activities is
DOI: --
发表时间: 1988-12
期刊: Genetics
影响因子: 3.3
作者:
B. Hall
通讯作者: B. Hall
DOI: --
发表时间: 1992-09
期刊: Genetics
影响因子: 3.3
作者:
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通讯作者: D. F. Steele;S. Jinks-Robertson
DOI: 10.1093/genetics/126.1.5
发表时间: 1990
期刊: Genetics
影响因子: 3.3
作者:
Hall,BG
通讯作者: Hall,BG
DOI: 10.1126/science.8023164
发表时间: 1994-07-15
期刊: SCIENCE
影响因子: 56.9
作者:
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