Cloning and characterization of a haloarchaeal heat shock protein 70 functionally expressed in Escherichia coli.
Cloning and characterization of a haloarchaeal heat shock protein 70 functionally expressed in Escherichia coli.
复制标题
在大肠杆菌中功能表达的盐古菌热休克蛋白 70 的克隆和表征。
DOI:
10.1111/j.1574-6968.2007.00881.x
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发表时间:
2007-10
影响因子:
2.1
通讯作者:
中科院分区:
文献类型:
--
作者:
The Hsp70 molecular chaperone machine is constituted by the 70-kDa heat shock protein Hsp70 (DnaK), cochaperone protein Hsp40 (DnaJ) and a nucleotide-exchange factor GrpE. Although it is one of the best-characterized molecular chaperone machines, little is known about it in archaea. A 5.2-kb region containing the hsp70 (dnaK) gene was cloned from Natrinema sp. J7 strain and sequenced. It contained the Hsp70 chaperone machine gene locus arranged unidirectionally in the order of grpE, hsp70 and hsp40 (dnaJ). The hsp70 gene from Natrinema sp. J7 was overexpressed in Escherichia coli BL21 (DE3). The recombinant Hsp70 protein was in a soluble and active form, and its ATPase activity was optimally active in 2.0 M KCl, whereas NaCl had less effect. In vivo, the haloarchaeal hsp70 gene allowed an E. coli dnak-null mutant to propagate lambda phages and grow at 42 degrees C. The results suggested that haloarchaeal Hsp70 should be beneficial for extreme halophiles survival in low-salt environments.
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影响因子:
3.1
作者:
Macario, AJL;Malz, M;de Macario, EC
通讯作者:
de Macario, EC
DOI:
--
发表时间:
1989-06
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
C. Alfano;R. McMacken
通讯作者:
C. Alfano;R. McMacken
影响因子:
3.2
作者:
J. Suppini;Mouna Amor;J. Alix;M. Ladjimi
通讯作者:
J. Suppini;Mouna Amor;J. Alix;M. Ladjimi
影响因子:
3.2
作者:
A. Mogk;B. Bukau;Rolf Lutz;W. Schumann
通讯作者:
A. Mogk;B. Bukau;Rolf Lutz;W. Schumann
影响因子:
5.6
作者:
M. Żmijewski;A. Macario;B. Lipińska
通讯作者:
M. Żmijewski;A. Macario;B. Lipińska