A conserved TATA-less proximal promoter drives basal transcription from the urokinase-type plasminogen activator receptor gene.

A conserved TATA-less proximal promoter drives basal transcription from the urokinase-type plasminogen activator receptor gene.
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保守的无 TATA 近端启动子驱动尿激酶型纤溶酶原激活剂受体基因的基础转录。

DOI:
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发表时间:
1995
期刊:
影响因子:
20.3
通讯作者:
F. Blasi
F. Blasi
中科院分区:
医学1区
文献类型:
--
作者:
E. Soravia;A. Grebe;P. D. Luca;K. Helin;TT Suh;JL Degen;F. Blasi

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尿激酶型纤溶酶原激活剂受体(UPAR)集中在细胞表面激活原-uPA,从而形成纤溶酶,从而促进细胞外蛋白的定向降解。为了表征控制受体表达的转录调控机制,我们克隆了一个包含人类和小鼠基因组上游调控序列的UPAR DNA片段。我们报道,人类uPAR基因主要转录起始点180bp以内的近端启动子驱动基础转录。该区域缺少TATA和CAAT盒,包含相对富含GC的近端序列。该序列的一个亚区在人类和小鼠基因之间高度保守,包含大部分启动子活性,并与HeLa核蛋白特异性结合,其中一个属于SP1类。
The urokinase-type plasminogen activator receptor (uPAR) focuses at the cell surface the activation of pro-uPA and, hence, the formation of plasmin, thus enhancing directional extracellular proteolysis. To characterize the transcriptional regulatory mechanisms that control receptor expression, we have cloned an uPAR DNA segment containing upstream regulatory sequences from both the human and murine genomes. We report that a proximal promoter, contained within 180 bp from the major transcription start sites of the human uPAR gene, drives basal transcription. This region lacks TATA and CAAT boxes and contains relatively GC-rich proximal sequences. A subregion of this sequence, highly conserved between human and murine genes, contains most of the promoter activity and is specifically bound by HeLa nuclear proteins, one of which belongs to the SP1 class.
DOI: 10.1042/bj2850629
发表时间: 1992-07
期刊: The Biochemical journal
影响因子: --
作者:
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DOI: --
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