Escherichia coli heat shock gene mutants are defective in proteolysis.
Escherichia coli heat shock gene mutants are defective in proteolysis.
复制标题
大肠杆菌热休克基因突变体在蛋白水解方面存在缺陷。
DOI:
10.1101/gad.2.12b.1851
复制
发表时间:
1988
影响因子:
10.5
通讯作者:
Gross,CA
中科院分区:
文献类型:
--
作者:
Straus,DB;Walter,WA;Gross,CA
Heat shock proteins in Escherichia coli are relatively abundant and some are essential for growth, but the function that they provide is unknown. The observation that heat shock proteins are induced by some abnormal, rapidly degraded polypeptides, and that strains with mutations in the rpoH gene, the positive regulator of heat shock gene expression, are defective in proteolysis, has led to the proposal that heat shock proteins are required for normal degradation of polypeptides. We have investigated this hypothesis by examining the degradation of polypeptide fragments generated by puromycin and the degradation of a nonsense fragment of beta-galactosidase. Mutations in the dnaK, dnaJ, grpE, and groEL heat shock genes result in defective proteolysis. Furthermore, overproduction of heat shock proteins results in enhanced rates of puromycyl fragment decay. The proteolysis defect of the heat shock gene mutants primarily affects energy-dependent protein degradation. These results indicate that at least one general function of heat shock proteins is to contribute to the ability of the cell to degrade abnormal polypeptides.
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影响因子:
3.2
作者:
M. Wada;K. Sekine;H. Itikawa
通讯作者:
H. Itikawa
DOI:
--
发表时间:
1986
期刊:
影响因子:
--
作者:
P. Régnier
通讯作者:
P. Régnier
DOI:
10.1016/s0006-291x(81)80257-4
发表时间:
1981
影响因子:
3.1
作者:
Neidhardt,FC;VanBogelen,RA
通讯作者:
VanBogelen,RA
DOI:
10.1016/s0021-9258(18)45398-7
发表时间:
1987-12
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
M. Żylicz;D. Ang;Costa Georgopoulos
通讯作者:
M. Żylicz;D. Ang;Costa Georgopoulos
影响因子:
3.6
作者:
Keller Ja;Simon Ld
通讯作者:
Simon Ld