Miyoshi Keita, Shirai Chiharu, Mizuta Keiko
Department of Bioresource Science and Technology, Graduate School of Biosphere Science, Hiroshima University, Kagamiyama 1-4-4, Higashi-Hiroshima 739-8528, Japan.
Nucleic Acids Res. 2003 Apr 1;31(7):1969-73. doi: 10.1093/nar/gkg278.
We demonstrate that the genes encoding trans- acting factors essential for pre-rRNA processing/ribosomal subunit assembly are responsive to various kinds of stresses such as heat shock, nitrogen deprivation and a secretory defect, in coordination with ribosomal protein genes in Saccharomyces cerevisiae. The rap1-17 mutation, which produces the C-terminally truncated protein of a transcriptional factor Rap1p, affects transcriptional repression of the trans-acting factor genes due to a secretory defect as shown previously for both ribosomal protein and rRNA genes.
我们证明,在酿酒酵母中,编码前体rRNA加工/核糖体亚基组装所必需的反式作用因子的基因,与核糖体蛋白基因协同,对热休克、氮剥夺和分泌缺陷等各种应激作出反应。rap1-17突变产生转录因子Rap1p的C末端截短蛋白,如先前对核糖体蛋白和rRNA基因所示,由于分泌缺陷,该突变影响反式作用因子基因的转录抑制。