Mapping the molecular interface between the sigma(70) subunit of E. coli RNA polymerase and T4 AsiA.
Mapping the molecular interface between the sigma(70) subunit of E. coli RNA polymerase and T4 AsiA.
复制标题
绘制大肠杆菌 RNA 聚合酶 sigma(70) 亚基和 T4 AsiA 之间的分子界面。
DOI:
10.1006/jmbi.2001.4445
复制
发表时间:
2001
影响因子:
5.6
通讯作者:
K. Severinov
中科院分区:
文献类型:
--
作者:
L. Minakhin;Julio A. Camarero;M. Holford;Christian N. Parker;Tom W. Muir;K. Severinov
Bacteriophage T4 antisigma protein AsiA (10 kDa) orchestrates a switch from the host and early viral transcription to middle viral transcription by binding to the sigma(70) subunit of E. coli RNA polymerase. The molecular determinants of sigma(70)-AsiA complex formation are not known. Here, we used combinatorial peptide chemistry, protein-protein crosslinking, and mutational analysis to study the interaction between AsiA and its target, the 33 amino acid residues-long sigma(70) peptide containing conserved region 4.2. Many region 4.2 amino acid residues contact AsiA, which likely completely occludes the DNA-binding surface of region 4.2. Though none of region 4.2 amino acid residues is singularly responsible for the very tight interaction with AsiA, sigma(70) Lys593 and Arg596 which lie outside the putative DNA recognition element of region 4.2, contribute the most. In AsiA, the first 20 amino acid residues are both necessary and sufficient for interactions with sigma(70). Our results clarify details of sigma(70)-AsiA interaction and open the way for engineering AsiA derivatives with altered specificities.
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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
DOI:
10.1073/pnas.94.8.3644
发表时间:
1997
影响因子:
11.1
作者:
Zhou,AT;Bessalle,R;Bisello,A;Nakamoto,C;Rosenblatt,M;Suva,LJ;Chorev,M
通讯作者:
Chorev,M
DOI:
10.1073/pnas.93.3.1119
发表时间:
1996-02-06
影响因子:
11.1
作者:
Tang, H;Sun, XQ;Ebright, RH
通讯作者:
Ebright, RH
影响因子:
5.6
作者:
SIEGELE, DA;HU, JC;GROSS, CA
通讯作者:
GROSS, CA
DOI:
10.1021/bi9824341
发表时间:
1999
期刊:
Biochemistry.
影响因子:
--
作者:
Luo,Y;Leszyk,J;Qian,Y;Gergely,J;Tao,T
通讯作者:
Tao,T