In vivo competition between a metallothionein regulatory element and the SV40 enhancer.

In vivo competition between a metallothionein regulatory element and the SV40 enhancer.
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金属硫蛋白调节元件和 SV40 增强子之间的体内竞争。

DOI:
10.1126/science.3006253
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发表时间:
1986
期刊:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
Karin,M
Karin,M
中科院分区:
--
文献类型:
--
作者:
Scholer,H;Haslinger,A;Heguy,A;Holtgreve,H;Karin,M

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人金属硫蛋白-IIA(hMT-IIA)基因在其5′调控区含有增强子元件。该增强子元件可以与SV 40增强子在体内竞争一种或多种细胞因子。这两个元素之间的竞争受到镉的调节,镉是hMT-IIA转录的诱导剂。所呈现的数据与重金属离子控制hMT-IIA增强子结合阳性因子的能力,导致转录增加的模型一致。SV 40增强子的最大活性需要相同的因子,这表明病毒利用在细胞基因表达中具有正常作用的因子来控制它们自己的基因。
The human metallothionein-IIA(hMT-IIA) gene contains an enhancer element within its 5′ regulatory region. This enhancer element can compete with the SV40 enhancer for one or more cellular factors in vivo. The competition between the two elements is modulated by cadmium, an inducer of hMT-IIAtranscription. The data presented are consistent with a model in which heavy metal ions control the ability of the hMT-IIAenhancer to bind a positive factor, leading to increased transcription. The same factor is required for maximal activity of the SV40 enhancer, which suggests that viruses utilize factors that have a normal role in cellular gene expression to control their own genes.
激活金属硫蛋白基因转录的细胞因子的竞争
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