Baler R, Welch W J, Voellmy R
Department of Biochemistry and Molecular Biology, University of Miami, School of Medicine, Florida 33101.
J Cell Biol. 1992 Jun;117(6):1151-9. doi: 10.1083/jcb.117.6.1151.
Heat shock genes encode proteins (hsp's) that play important structural roles under normal circumstances and are essential to the cells' ability to survive environmental insults. Evidence is presented herein that transcriptional regulation of hsp gene expression is linked with the regulation of overall protein synthesis as well as with the accumulation of proteins denatured by stressful events. The factor that connects the three processes appears to be one of the hsp's, presumably a member(s) of the hsp70 family. Biochemical experiments demonstrate that complexes containing hsp70 and heat shock transcription factor, the specific regulator of hsp gene activity, are formed in the cells.
热休克基因编码的蛋白质(热休克蛋白)在正常情况下发挥重要的结构作用,对于细胞在环境应激下的生存能力至关重要。本文提供的证据表明,热休克蛋白基因表达的转录调控与整体蛋白质合成的调控以及应激事件导致的变性蛋白的积累有关。连接这三个过程的因素似乎是一种热休克蛋白,推测是热休克蛋白70家族的成员之一。生化实验表明,细胞中形成了包含热休克蛋白70和热休克转录因子(热休克蛋白基因活性的特异性调节因子)的复合物。