Heat Shock (45°C) Results in an Increase of Nuclear Matrix Protein Mass in HeLa Cells

Heat Shock (45°C) Results in an Increase of Nuclear Matrix Protein Mass in HeLa Cells
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热激 (45°C) 导致 HeLa 细胞中核基质蛋白质量增加

DOI:
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发表时间:
1986
期刊:
影响因子:
--
通讯作者:
J. R. Roti Roti
J. R. Roti Roti
中科院分区:
--
文献类型:
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作者:
R. Warters;L. Brizgys;Rajesh Sharma;J. R. Roti Roti

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从45°C加热的HeLa细胞中分离核基质,以确定热冲击对其组成和结构的影响。来自未加热细胞的基质含有约10%的总细胞蛋白,观察到为直径范围为3至5 μm的球形颗粒,主要成分多肽的分子量为45、47、55、57、59和65千道尔顿。在45°C下,核基质蛋白质质量随着暴露时间的增加而线性增加,其大小或形状没有观察到变化。观察到额外的蛋白质一般具有大于45千道尔顿的分子量,其中多肽显著增加为28.5、38.5、60、66、75、81、88、100和115千道尔顿。热诱导的细胞毒性和核基质蛋白质质量增加之间呈指数关系。在细胞毒性发作之前,基质蛋白质质量持续增加15%,而基质蛋白质c增加35%。
SummaryThe nuclear matrix from HeLa cells heated at 45°C was isolated to determine the effect of thermal shock on its composition and structure. The matrix from unheated cells contained about 10 per cent of total cell protein and was observed to be a spherical particle with a diameter ranging from 3 to 5 μm with the major constituent polypeptides having molecular weights of 45, 47, 55, 57, 59 and 65 kilodaltons. The nuclear-matrix protein mass increased linearly with increasing exposure time at 45°C with no observable change in its size or shape. The additional proteins were observed in general to have molecular weights greater than 45 kilodaltons, with marked increases in polypeptides of 28·5, 38·5, 60, 66, 75, 81, 88, 100 and 115 kilodaltons. An exponential relationship was observed between heat-induced cytotoxicity and the nuclear matrix protein mass increase. A 15 per cent increase in matrix protein mass was sustained prior to the onset of cytotoxicity, while a 35 per cent increase in matrix protein c...
“迅速”热休克蛋白:与核基质中间丝相关的新蛋白质的翻译调节合成,作为对热休克的早期反应。
DOI: 10.1073/pnas.80.15.4737
发表时间: 1983
影响因子: 11.1
作者:
Reiter,T;Penman,S
通讯作者: Penman,S
DOI: 10.1073/pnas.79.10.3218
发表时间: 1982-01-01
期刊: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA-BIOLOGICAL SCIENCES
影响因子: --
作者:
LI, GC;WERB, Z
通讯作者: WERB, Z
热对 HeLa 细胞核染色质结构的影响。
DOI: --
发表时间: 1982
期刊: Radiation research
影响因子: 3.4
作者:
Wheeler,KT;Warters,RL
通讯作者: Warters,RL
DOI: --
发表时间: 1982
期刊: Radiation research
影响因子: 3.4
作者:
RotiRoti,JL;Painter,RB
通讯作者: Painter,RB