Sum1, a highly conserved WD-repeat protein, suppresses S-M checkpoint mutants and inhibits the osmotic stress cell cycle response in fission yeast.
Sum1, a highly conserved WD-repeat protein, suppresses S-M checkpoint mutants and inhibits the osmotic stress cell cycle response in fission yeast.
复制标题
Sum1 是一种高度保守的 WD 重复蛋白,可抑制 S-M 检查点突变体并抑制裂殖酵母中的渗透应激细胞周期反应。
DOI:
10.1093/genetics/148.4.1731
复制
发表时间:
1998
期刊:
影响因子:
3.3
通讯作者:
Enoch,T
中科院分区:
文献类型:
--
作者:
Humphrey,T;Enoch,T
The S-M checkpoint ensures that entry into mitosis is dependent on completion of DNA replication. In the fission yeast Schizosaccharomyces pombe, the S-M checkpoint mutant cdc2-3w is thought to be defective in receiving the checkpoint signal. To isolate genes that function in the checkpoint pathway, we screened an S. pombe cDNA library for genes that, when overexpressed, could suppress the checkpoint defect of cdc2-3w. Using this approach, we have identified a novel gene, sum1+(suppressor ofuncontrolledmitosis). sum1+encodes a highly conserved WD-transducin repeat protein with striking sequence similarity to the human transforming growth factor (TGF)-β-receptor interacting protein TRIP-1 and to the translation initiation factor 3 subunit eIF3-p39, encoded by the TIF34 gene in Saccharomyces cerevisiae. S. pombe sum1+is an essential gene, required for normal cell growth and division. In addition to restoring checkpoint control, overexpression of sum1+inhibits the normal cell cycle response to osmotic stress. Furthermore, we demonstrate that inactivation of the stress-activated MAP kinase pathway, required for cell cycle stress response, restores the S-M checkpoint in cdc2-3w cells. These results suggest that Sum1 interacts with the stress-activated MAP kinase pathway and raise the possibility that environmental conditions may influence the checkpoint response in fission yeast.
登录
查看更多内容
影响因子:
4
作者:
K. Sheldrick;A. Carr
通讯作者:
A. Carr
影响因子:
64.8
作者:
MURAKAMI, H;OKAYAMA, H
通讯作者:
OKAYAMA, H
影响因子:
3.5
作者:
SAVITSKY, K;SFEZ, S;ROTMAN, G
通讯作者:
ROTMAN, G
DOI:
--
发表时间:
1991
期刊:
Cold Spring Harbor Symposia on Quantitative Biology
影响因子:
--
作者:
T. Enoch;K. L. Gould;Paul Nurse
通讯作者:
Paul Nurse
影响因子:
56.9
作者:
SAVITSKY, K;BARSHIRA, A;SHILOH, Y
通讯作者:
SHILOH, Y