The bacteriophage T4 AsiA protein contacts the β-flap domain of RNA polymerase
The bacteriophage T4 AsiA protein contacts the β-flap domain of RNA polymerase
复制标题
噬菌体 T4 AsiA 蛋白接触 RNA 聚合酶的 β-flap 结构域
DOI:
--
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发表时间:
2009
影响因子:
11.1
通讯作者:
A. Hochschild
中科院分区:
文献类型:
--
作者:
Andy H. Yuan;Bryce E. Nickels;A. Hochschild
To initiate transcription from specific promoters, the bacterial RNA polymerase (RNAP) core enzyme must associate with the initiation factor σ, which contains determinants that allow sequence-specific interactions with promoter DNA. Most bacteria contain several σ factors, each of which directs recognition of a distinct set of promoters. A large and diverse family of proteins known as “anti-σ factors” regulates promoter utilization by targeting specific σ factors. The founding member of this family is the AsiA protein of bacteriophage T4. AsiA specifically targets the primary σ factor in Escherichia coli, σ70, and inhibits transcription from the major class of σ70-dependent promoters. AsiA-dependent transcription inhibition has been attributed to a well-documented interaction between AsiA and conserved region 4 of σ70. Here, we establish that efficient AsiA-dependent transcription inhibition also requires direct protein–protein contact between AsiA and the RNAP core. In particular, we demonstrate that AsiA contacts the flap domain of the RNAP β-subunit (the β-flap). Our findings support the emerging view that the β-flap is a target site for regulatory proteins that affect RNAP function during all stages of the transcription cycle.
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DOI:
10.1006/jmbi.1998.1742
发表时间:
1998
期刊:
Journal of molecular biology.
影响因子:
--
作者:
Severinova,E;Severinov,K;Darst,SA
通讯作者:
Darst,SA
影响因子:
16
作者:
E. Campbell;Oriana Muzzin;M. Chlenov;Jing L. Sun;C. Olson;O. Weinman;Michelle Trester-Zedlitz;S. Darst
通讯作者:
E. Campbell;Oriana Muzzin;M. Chlenov;Jing L. Sun;C. Olson;O. Weinman;Michelle Trester-Zedlitz;S. Darst
影响因子:
5.6
作者:
Pal,Debashis;Vuthoori,Madhavi;Pande,Suchira;Wheeler,David;Hinton,DeborahM
通讯作者:
Hinton,DeborahM
影响因子:
10.5
作者:
Dove, SL;Hochschild, A
通讯作者:
Hochschild, A
DOI:
10.1073/pnas.94.16.8433
发表时间:
1997
影响因子:
11.1
作者:
Wang,D;Severinov,K;Landick,R
通讯作者:
Landick,R