A mutation in the gene involved in sister chromatid separation causes a defect in nuclear mRNA export in fission yeast

被引:6
作者
Azad, AK
Ideue, T
Ohshima, Y
Tani, T [1 ]
机构
[1] Kumamoto Univ, Fac Sci, Dept Biol Sci, Kumamoto 8608555, Japan
[2] Kyushu Univ, Grad Sch, Fac Sci, Dept Biol, Fukuoka 8128581, Japan
关键词
Ptr4p; Cut1p; mRNA export; chromosome segregation; fission yeast;
D O I
10.1016/j.bbrc.2003.08.135
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Fission yeast ptr4-1 is one of the mRNA transport mutants that accumulate poly(A)(+) RNA in the nuclei at the nonpermissive temperature. We cloned the ptr4(+) gene and found that it is identical with the cut1(+) gene essential for chromosome segregation during mitosis. ptr4/cut1 has no defects in nucleocytoplasmic transport of a protein, indicative of a specific blockage of mRNA export by this mutation. A mutant of Cut2p cooperating with Cut1p in sister chromatid separation also showed defective mRNA export at the nonpermissive temperature. Our results suggest a novel linkage between the cell division cycle and nuclear mRNA export in eukaryotic cells. (C) 2003 Elsevier Inc. All rights reserved.
引用
收藏
页码:176 / 181
页数:6
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