Topological Analysis of the Membrane-localized Redox-responsive Sensor Kinase PrrB from Rhodobacter sphaeroides 2.4.1*
Topological Analysis of the Membrane-localized Redox-responsive Sensor Kinase PrrB from Rhodobacter sphaeroides 2.4.1*
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来自球形红杆菌 2.4.1* 的膜定位氧化还原响应传感器激酶 PrrB 的拓扑分析
DOI:
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发表时间:
1999
影响因子:
4.8
通讯作者:
S. Kaplan
中科院分区:
文献类型:
--
作者:
S. Ouchane;S. Kaplan
Photosynthesis gene expression inRhodobacter sphaeroides is controlled in part by the two-component (Prr) regulatory system composed of a membrane-bound sensor kinase (PrrB) and a response regulator (PrrA). Hydropathy profile-based computer analysis predicted that the PrrB polypeptide could contain six membrane-spanning domains at its amino terminus and a hydrophilic, cytoplasmic carboxyl terminus. Both the localization and the topology of the PrrB sensor kinase have been studied by generating a series of gene fusions with the Escherichia coliperiplasmically localized alkaline phosphatase and the cytoplasmic β-galactosidase. Eighteen prrB-phoA and fiveprrB-lacZ fusions were constructed and expressed in bothE. coli and R. sphaeroides. Enzymatic activity assays and immunoblot analyses were performed to identify and to localize the different segments of PrrB in the membrane. The data obtained in E. coli generally correlated with the data obtained in R. sphaeroides and support the computer predictions. On the basis of the theoretical model and the results provided by these studies, a topological model for the membrane localization of the PrrB polypeptide is proposed.
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DOI:
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发表时间:
1991
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Yun,CH;VanDoren,SR;Crofts,AR;Gennis,RB
通讯作者:
Gennis,RB
影响因子:
2.7
作者:
Michael E. Kovach;R. Phillips;P. Elzer;R. Roop;K. Peterson
通讯作者:
Michael E. Kovach;R. Phillips;P. Elzer;R. Roop;K. Peterson
DOI:
--
发表时间:
1992
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Kerppola,RE;Ames,GF
通讯作者:
Ames,GF
DOI:
--
发表时间:
1991
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Muñoa,FJ;Miller,KW;Beers,R;Graham,M;Wu,HC
通讯作者:
Wu,HC