• Korean Journal of Microbiology
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• v.44 no.2
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• pp.105-109
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• 2008

We studied on the function and localization of fission yeast Schizosaccharomyces pombe Nup97p, which is homologous to nucleoporin Nic96p in budding yeast Saccharomyces cerevisiae. There was no effect on growth and $poly(A)^{+}$ RNA distribution of cells when nup97 gene was overexpressed. However, the haploid ${\Delta}nup97::kan^{r}$ null mutants confirmed extensive $poly(A)^{+}$ RNA accumulation in the nucleus, abnormal DNA distribution, and cessation of growth when nup97 expression was repressed. We determined the subcellular localization of Nup97 tagged at the N terminus or the C terminus with GFP. Both fusions complemented growth defect of ${\Delta}nup97::kan^{r}$ null mutants. An integrated version of the nup97-GFP fusion was constructed at the nup97 locus. Nup97-GFP fusions expressed from its own promoter was localized at the nuclear periphery with a punctate appearance. These results suggest that Nup97p in fission yeast is also nucleoporin, which is involved in mRNA export.

• Journal of Microbiology
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• v.45 no.4
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• pp.344-349
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• 2007

We have isolated previously three synthetic lethal mutants in Schizosaccharomyces pombe, which genetically interact with mex67, in order to identify the genes involved in mRNA export. A novel nup97 gene was isolated by complementation of the growth defect in one of the synthetic lethal mutants, SLMex3. The nup97 gene contains one intron and encodes an 851 amino-acid protein that is similar to nucleoporins, Nppl06p in S. pombe and Nic96p in Saccharomyces cerevisiae. The nup97 gene is essential for vegetative growth, and nup97 null mutant harboring pREP41X-Nup97 showed $poly(A)^+$ RNA export defect when expression of nup97 is repressed in the presence of thiamine. These results suggest that nup97 is involved in mRNA export from the nucleus to cytoplasm.

• 한국생태학회:학술대회논문집
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• 1999.05a
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• pp.97.2-97.2
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• 1999