An enhancer-like sequence within the Xenopus U2 gene promoter facilitates the formation of stable transcription complexes

An enhancer-like sequence within the Xenopus U2 gene promoter facilitates the formation of stable transcription complexes
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非洲爪蟾 U2 基因启动子内的增强子样序列促进稳定转录复合物的形成

DOI:
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发表时间:
1985
期刊:
影响因子:
64.8
通讯作者:
E. D. Robertis
E. D. Robertis
中科院分区:
综合性期刊1区
文献类型:
--
作者:
I. Mattaj;S. Lienhard;J. Jiricny;E. D. Robertis

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增强子是真核启动子元件,其以相对独立于其相对于附近基因1-3的位置和方向的方式提高转录效率。越来越多的证据表明增强子的作用是由交易因子 4-8 介导的,但这些因子的作用模式尚不清楚。我们在这里报告非洲爪蟾 U2 基因启动子,它包含两个序列元件。远端序列元件通过促进稳定转录复合物的形成将启动子活性提高 20 倍。与部分远端序列元件相对应的合成 14 碱基对 (bp) 寡核苷酸与免疫球蛋白基因启动子元件以及猿猴病毒 40 (SV40) 和免疫球蛋白重链基因增强子具有同源性,以方向无关的方式刺激转录。
Enhancers are eukaryotic promoter elements that increase tran-scriptional efficiency in a manner relatively independent of their position and orientation with respect to a nearby gene1–3. There is growing evidence that enhancer action is mediated by transacting factors4–8, but the mode of action of these factors is not yet known. We report here on the Xenopus U2 gene promoter, which contains two sequence elements. The distal sequence element increases promoter activity 20-fold by facilitating the formation of stable transcription complexes. A synthetic 14-base-pair (bp) oligonucleotide corresponding to part of the distal sequence element, which shows homology to an immunoglobulin gene promoter element and to both the simian virus 40 (SV40) and the immunoglobulin heavy-chain gene enhancers, stimulates transcription in an orientation-independent manner.
DOI: 10.1126/science.3917574
发表时间: 1985-01-01
期刊: SCIENCE
影响因子: 56.9
作者:
EPHRUSSI, A;CHURCH, GM;GILBERT, W
通讯作者: GILBERT, W
人类 U2 和 U1 RNA 基因使用相似的转录信号。
DOI: 10.1002/j.1460-2075.1984.tb02293.x
发表时间: 1984
期刊: The EMBO journal
影响因子: --
作者:
Westin,G;Lund,E;Murphy,JT;Pettersson,U;Dahlberg,JE
通讯作者: Dahlberg,JE
DOI: 10.1073/pnas.81.9.2650
发表时间: 1984-01-01
期刊: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA-BIOLOGICAL SCIENCES
影响因子: --
作者:
PARSLOW, TG;BLAIR, DL;GRANNER, DK
通讯作者: GRANNER, DK