Regulation of ribosomal protein S6 phosphorylation in heat-shocked HeLa cells.

Regulation of ribosomal protein S6 phosphorylation in heat-shocked HeLa cells.
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热休克 HeLa 细胞中核糖体蛋白 S6 磷酸化的调节。

DOI:
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发表时间:
1987
期刊:
European Journal of Biochemistry
影响因子:
--
通讯作者:
O. Martini
O. Martini
中科院分区:
--
文献类型:
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作者:
P. Tas;O. Martini

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能量电荷、核糖体蛋白磷酸化和蛋白质合成速率的减少是非脊椎动物对高温的细胞反应的有据可查的方面。我们试图在32P标记的HeLa细胞中重现这种反应模式,以研究这些效应之间的假设因果关系。在HeLa细胞从36摄氏度转移到42摄氏度,S6的去磷酸化和蛋白质合成的抑制,由于起始速率下降,观察到,但不能被介导的细胞的一般能量电荷的变化,因为ATP和GTP水平没有降低。此外,我们发现,高温翻译块的发展速度比整体去磷酸化的S6,表明S6去磷酸化不能负责的翻译块,除非位点特异性的影响发挥了关键作用。
Decreases in energy charge, ribosomal protein phosphorylation and rate of protein synthesis are well-documented facets of the cellular response to hyperthermia in non-vertebrates. We have tried to reproduce this response pattern in 32P-labelled HeLa cells in order to investigate the hypothetical causal relationship between these effects. In HeLa cells shifted from 36 degrees C to 42 degrees C, dephosphorylation of S6 and inhibition of protein synthesis, owing to a decreased initiation rate, were observed, but could not have been mediated by changes in the cells' general energy charge since the ATP and GTP levels were not reduced. In addition, we found that the hyperthermic translation block developed faster than the overall dephosphorylation of S6, showing that S6 dephosphorylation cannot be responsible for the translation block unless site-specific effects play a critical role.
热休克艾氏腹水肿瘤细胞中多肽链起始的抑制机制。
DOI: 10.1111/j.1432-1033.1984.tb08088.x
发表时间: 1984
期刊: European journal of biochemistry
影响因子: --
作者:
Panniers,R;Henshaw,EC
通讯作者: Henshaw,EC
非洲爪蟾卵母细胞减数分裂成熟过程中核糖体蛋白 S6 的磷酸化增加。
DOI: 10.1073/pnas.79.9.2937
发表时间: 1982
影响因子: 11.1
作者:
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通讯作者: Maller,JL
热休克艾利希细胞中多肽链起始的抑制机制涉及真核起始因子 4F 活性的降低。
DOI: --
发表时间: 1985
期刊: The Journal of biological chemistry
影响因子: --
作者:
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通讯作者: Henshaw,EC