Identification of cis-acting regulatory elements in the promoter region of the rat brain creatine kinase gene

Identification of cis-acting regulatory elements in the promoter region of the rat brain creatine kinase gene
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大鼠脑肌酸激酶基因启动子区顺式作用调控元件的鉴定

DOI:
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发表时间:
1990
影响因子:
5.3
通讯作者:
P. A. Benfield
P. A. Benfield
中科院分区:
生物学2区
文献类型:
--
作者:
G M Hobson;G R Molloy;P. A. Benfield

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通过缺失、连接子扫描和置换突变分析了大鼠脑肌酸激酶(ckb)启动子的功能组织。将ckb/neo(新霉素抗性基因)杂合基因的ckb启动子引入突变体,突变基因在HeLa细胞中瞬时表达。通过neo RNA的引物延伸分析测定表达,这允许确定转录起始位点和转录量。转染和引物延伸反应通过同时分析位于与杂合ckb/neo基因相同质粒上的腺病毒VA基因的转录进行内部控制。我们证明了195 bp的ckb启动子足以在HeLa细胞中进行有效的体内表达。在~ 28 bp处的非共有TTAA元件似乎在体内为ckb启动子提供TATA盒功能。从TTAA元件有效转录需要两个CCAAT元件,一个在~ 84 bp,另一个在~ 54 bp,以及一个在~ 66 bp的TATAAA TA元件(共有TATA盒序列)。此外,我们目前的证据表明,共识β-珠蛋白TATA框响应TATAAATA元素以相同的方式作为ckb非共识TTAA元素。
The functional organization of the rat brain creatine kinase (ckb) promoter was analyzed by deletion, linker scanning, and substitution mutagenesis. Mutations were introduced into the ckb promoter of hybrid ckb/neo (neomycin resistance gene) genes, and the mutant genes were expressed transiently in HeLa cells. Expression was assayed by primer extension analysis of neo RNA, which allowed the transcription start sites and the amount of transcription to be determined. Transfections and primer extension reactions were internally controlled by simultaneous analysis of transcription from the adenovirus VA gene located on the same plasmid as the hybrid ckb/neo gene. We demonstrate that 195 bp of the ckb promoter is sufficient for efficient in vivo expression in HeLa cells. A nonconsensus TTAA element at -28 bp appears to provide the TATA box function for the ckb promoter in vivo. Two CCAAT elements, one at -84 bp and the other at -54 bp, and a TATAAA TA element (a consensus TATA box sequence) at -66 bp are required for efficient transcription from the TTAA element. In addition, we present evidence that the consensus beta-globin TATA box responds to the TATAAATA element in the same way as the ckb nonconsensus TTAA element.
DOI: 10.1073/pnas.85.8.2691
发表时间: 1988-04-01
影响因子: 11.1
作者:
CHEN, W;STRUHL, K
通讯作者: STRUHL, K
DOI: 10.1101/gad.3.12b.2021
发表时间: 1989-12-01
影响因子: 10.5
作者:
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通讯作者: GLUECKSOHNWAELSCH, S
肌酸激酶:结构-活性关系。
DOI: 10.1002/9780470122990.ch6
发表时间: 1983
期刊: Advances in enzymology and related areas of molecular biology
影响因子: --
作者:
Kenyon,GL;Reed,GH
通讯作者: Reed,GH
编码人线粒体肌酸激酶的基因和 cDNA 的分离和表征。
DOI: --
发表时间: 1989
期刊: The Journal of biological chemistry
影响因子: --
作者:
Haas,RC;Korenfeld,C;Zhang,ZF;Perryman,B;Roman,D;Strauss,AW
通讯作者: Strauss,AW