Journal of Microbiology

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NOTE] A Protective Role of Methionine-R-Sulfoxide Reductase against Cadmium in Schizosaccharomyces pombe: Chang-Jin Lim , Hannah Jo , Kyunghoon Kim; J. Microbiol. 2014;52(11):976-981. Published online May 30, 2014; DOI: https://doi.org/10.1007/s12275-014-3512-7

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The Schizosaccharomyces pombe cells harboring the methionine- R-sulfoxide reductase (MsrB)-overexpressing recombinant plasmid pFMetSO exhibited better growth than vector control cells, when shifted into fresh medium containing cadmium chloride (abbreviated as Cd). Although both groups of cells contained enhanced reactive oxygen species (ROS) and nitric oxide (NO) levels in the presence of Cd, ROS and NO levels were significantly lower in the S. pombe cells harboring pFMetSO than in vector control cells. Conversely, the S. pombe cells harboring pFMetSO possessed higher total glutathione (GSH) levels and a greater reduced/oxidized GSH ratio than vector control cells under the same conditions.

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Pleurotus pulmonarius Strain: Arsenic(III)/Cadmium(II) Accumulation, Tolerance, and Simulation Application in Environmental Remediation
Yuhui Zhang, Xiaohong Chen, Ling Xie
International Journal of Environmental Research and Public Health.2023; 20(6): 5056. CrossRef
Impact of cadmium and nickel on ion homeostasis in the yeast Schizosaccharomyces pombe
Miroslava Pozgajova, Alica Navratilova, Julius Arvay, Hana Duranova, Anna Trakovicka
Journal of Environmental Science and Health, Part B.2020; 55(2): 166. CrossRef
A methionine-R-sulfoxide reductase, OsMSRB5, is required for rice defense against copper toxicity
Tengwei Xiao, Mengmeng Mi, Changyong Wang, Meng Qian, Yahua Chen, Luqing Zheng, Hongsheng Zhang, Zhubing Hu, Zhenguo Shen, Yan Xia
Environmental and Experimental Botany.2018; 153: 45. CrossRef
Identification and Characterization of a Novel Methionine Sulfoxide Reductase B Gene (AccMsrB) fromApis cerana cerana(Hymenoptera: Apidae)
Feng Liu, Zhihong Gong, Weixing Zhang, Ying Wang, Lanting Ma, Hongfang Wang, Xingqi Guo, Baohua Xu
Annals of the Entomological Society of America.2015; 108(4): 575. CrossRef

Nup211, the Fission Yeast Homolog of Mlp1/Tpr, Is Involved in mRNA Export: Jin-Ah Bae , DongGeRaMi Moon , Jin Ho Yoon; J. Microbiol. 2009;47(3):337-343. Published online June 26, 2009; DOI: https://doi.org/10.1007/s12275-009-0125-7

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Abstract

Synthetic lethal mutants have been previously isolated in fission yeast Schizosaccharomyces pombe, which genetically interact with spmex67, in order to identify the genes involved in mRNA export. The nup211 gene was isolated by complementation of the growth defect in one of the synthetic lethal mutants, SLMex2, under synthetic lethal condition. We showed that Nup211, fission yeast homolog of Mlp1/Mlp2/Tpr, is essential for vegetative growth and Nup211-GFP proteins expressed at endogenous level are localized mainly in nuclear periphery. The accumulation of poly(A)+ RNA in the nucleus is exhibited when expression of nup211 is repressed or over-expressed. These results suggest that the Nup211 protein plays a pivotal role of mRNA export in fission yeast.

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Fission yeast essential nuclear pore protein Nup211 regulates the expression of genes involved in cytokinesis
Domenick Kamel, Ayisha Sookdeo, Ayana Ikenouchi, Hualin Zhong, Juan Mata
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Quantitative analysis of nuclear pore complex organization in Schizosaccharomyces pombe
Joseph M Varberg, Jay R Unruh, Andrew J Bestul, Azqa A Khan, Sue L Jaspersen
Life Science Alliance.2022; 5(7): e202201423. CrossRef
Asymmetrical localization of Nup107-160 subcomplex components within the nuclear pore complex in fission yeast
Haruhiko Asakawa, Tomoko Kojidani, Hui-Ju Yang, Chizuru Ohtsuki, Hiroko Osakada, Atsushi Matsuda, Masaaki Iwamoto, Yuji Chikashige, Koji Nagao, Chikashi Obuse, Yasushi Hiraoka, Tokuko Haraguchi, Gregory P. Copenhaver
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Silvia Salas-Pino, Paola Gallardo, Ramón R. Barrales, Sigurd Braun, Rafael R. Daga
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Tts1, the fission yeast homologue of the TMEM33 family, functions in NE remodeling during mitosis
Dan Zhang, Snezhana Oliferenko, Daniel J. Lew
Molecular Biology of the Cell.2014; 25(19): 2970. CrossRef
Characterization of nuclear pore complex components in fission yeastSchizosaccharomyces pombe
Haruhiko Asakawa, Hui-Ju Yang, Takaharu G Yamamoto, Chizuru Ohtsuki, Yuji Chikashige, Kumiko Sakata-Sogawa, Makio Tokunaga, Masaaki Iwamoto, Yasushi Hiraoka, Tokuko Haraguchi
Nucleus.2014; 5(2): 149. CrossRef
Isolation of synthetic lethal mutations in combination with spnab2 of fission yeast
Yun-Sun Park, Jin Ho Yoon
Genes & Genomics.2012; 34(3): 275. CrossRef
Double duty for nuclear proteins – the price of more open forms of mitosis
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Trends in Genetics.2009; 25(12): 545. CrossRef

Overexpression of Bacterioferritin Comigratory Protein (Bcp) Enhances Viability and Reduced Glutathione Level in the Fission Yeast Under Stress: Ga-Young Kang , Eun-Hee Park , Kyunghoon Kim , Chang-Jin Lim; J. Microbiol. 2009;47(1):60-67. Published online February 20, 2009; DOI: https://doi.org/10.1007/s12275-008-0077-3

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Abstract: The structural gene encoding bacterioferritin comigratory protein (Bcp) was amplified using PCR from the genomic DNA of Schizosaccharomyces pombe, and transferred into the shuttle vector pRS316 to generate the recombinant plasmid pBCP10. The bcp+ mRNA level in the pBCP10-containing yeast cells was significantly higher than that in the control yeast cells, indicating that the cloned gene is functioning. The S. pombe cells harboring the plasmid pBCP10 exhibited higher survival on the solid minimal media with hydrogen peroxide, tert-BOOH or cadmium than the control yeast cells. They also exhibited enhanced cellular viability in the liquid media containing the stressful agents. The increased viabilities of the fission yeast cells harboring the plasmid pBCP10 were also obtained with 0.4% glucose or 0.4% sucrose as a sole carbon source, and nitrogen starvation, compared with those of the control yeast cells. The total glutathione (GSH) content and total GSH/GSSG ratio were significantly higher in the yeast cells harboring the plasmid pBCP10 than in the control yeast cells. In brief, the S. pombe Bcp plays a protective role in the defensive response to oxidative stress possibly via up-regulation of total and reduced glutathione levels.

The Fission Yeast Homologue of Gle1 is Essential for Growth and Involved in mRNA Export: DongGeRaMi Moon , Jin-Ah Bae , Hyun Jin Cho , Jin Ho Yoon; J. Microbiol. 2008;46(4):422-428. Published online August 31, 2008; DOI: https://doi.org/10.1007/s12275-008-0177-0

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Abstract: We have isolated Gle1 homologue (named as spgle1) as a partial multicopy suppressor of the synthetic lethality of rae1-167 elf1-21 in fission yeast Schizosaccharomyces pombe. The spgle1 is also able to complement partially temperature-sensitive phenotype of rae1-167 only at a lower restrictive temperature. The spgle1 gene contains one intron and encodes a 480 amino-acid protein with predicted molecular weight of 56.2 kDa. We showed that spgle1 gene is essential for vegetative growth and functional Gle1-GFP protein is localized mainly in NPC. The accumulation of poly(A)+ RNA in the nucleus is exhibited when expression of spgle1 is repressed or over-expressed. These results suggest that the spGle1 protein is also involved in mRNA export in fission yeast.

Schizosaccharomyces pombe nup97, which Genetically Interacts with mex67, is Essential for Growth and Involved in mRNA Export: Hyun Jin Cho , Duk Kyung Hwang , Sun Im Jung , Jin Ho Yoon; J. Microbiol. 2007;45(4):344-349.; DOI: https://doi.org/2562 [pii]

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Abstract: 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, Npp106p 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.

Journal Article

Carbon Source-Dependent Regulation of the Schizosaccharomyces pombe pbh1 Gene: Su-Jung Kim , Nam-Chul Cho , In Wang Ryu , Kyunghoon Kim , Eun-Hee Park , Chang-Jin Lim; J. Microbiol. 2006;44(6):689-693.; DOI: https://doi.org/2454 [pii]

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Abstract: Pbh1, from the fission yeast Schizosaccharomyces pombe, is a baculoviral inhibitor of apoptosis (IAP) repeat (BIR) domain-containing protein. Its unique encoding gene was previously found to be regulated by nitric oxide and nitrogen starvation. In the current work, the Pbh1-lacZ fusion gene was used to elucidate the transcriptional regulation of the pbh1 gene under various carbon sources. When fermentable carbon sources, such as glucose (at a low concentration of 0.2%), sucrose (2.0%) and lactose (2.0%), were the sole carbon source, the synthesis of β-galactosidase from the Pbh1-lacZ fusion gene was reasonably enhanced. However, the induction by these fermentable carbon sources was abolished in the Pap1-negative S. pombe cells, implying that this type of induction of the pbh1 gene is mediated by Pap1. Ethanol (2.0%), a nonfermentable carbon source, was also able to enhance the synthesis of β-galactosidase from the fusion gene in wild-type cells but not in Pap1-negative cells. The results indicate that the S. pombe pbh1 gene is up-regulated under metabolic oxidative stress in a Pap1-dependent manner.

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The Schizosaccharomyces pombe Gene Encoding [gamma]-Glutamyl Transpeptidase I Is Regulated by Non-fermentable Carbon Sources and Nitrogen Starvation: Hong-Gyum Kim , Hey-Jung Park , Hyun-Jung Kang , Hye-Won Lim , Kyunghoon Kim , Eun-Hee Park , Kisup Ahn , Chang-Jin Lim; J. Microbiol. 2005;43(1):44-48.; DOI: https://doi.org/2139 [pii]

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Abstract: In our previous study, the first structural gene (GGTI) encoding g-glutamyl transpeptidase was cloned and characterized from the fission yeast Schizosaccharomyces pombe, and its transcription, using the GGTI-lacZ fusion gene, containing the 1,085 bp upstream region from the translational initiation point, was found to be enhanced by sodium nitroprusside and L-buthionine-(S,R)-sulfoximine (BSO). In the present work, regulation of the GGTI gene was further elucidated. Non-fermentable carbon sources, such as acetate and ethanol, markedly enhanced the synthesis of [beta]-galactosidase from the GGTI-lacZ fusion gene. However, its induction by non-fermentable carbon sources appeared to be independent of the presence of the Pap1 protein. Nitrogen starvation also gave rise to induction of GGTI gene expression in a Pap1-independent manner. The three additional fusion plasmids, carrying 754, 421 and 156 bp regions, were constructed. The sequence responsible for the induction by non-fermentable carbon sources and nitrogen starvation was identified to exist within a -421 bp region of the GGTI gene. Taken together, the S. pombe GGTI gene is regulated by non-fermentable carbon sources and nitrogen starvation.

Transcriptional Regulation of the Schizosaccharomyces pombe Gene Encoding Glutathione S-Transferase I by a Transcription Factor Pap1: Hong-Gyum Kim , Byung-Chul Kim , Kyunghoon Kim , Eun-Hee Park , Chang-Jin Lim; J. Microbiol. 2004;42(4):353-356.; DOI: https://doi.org/2099 [pii]

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Abstract: In a previous study, a gst gene was isolated from the fission yeast Schizosaccharomyces pombe. This gene was dubbed gst I, and was characterized using the gstI-lacZ fusion plasmid pYSH2000. In this work, four additional fusion plasmids, pYSHSD1, pYSHSD2, pYSHSD3 and pYSHSD4, were constructed, in order to carry (respectively) 770, 551, 358 and 151 bp upstream regions from the translational initiation point. The sequence responsible for induction by aluminum, mercury and hydrogen peroxide was located in the range between -1,088 and -770 bp upstream of the S. pombe gst I gene. The same region was identified to contain the nucleotide sequence responsible for regulation by Pap1, and has one putative Pap1 binding site, TTACGTAT, located in the range between -954 ~ -947 bp upstream of the gst I gene. Negatively acting sequences are located between -1,088 and -151 bp. These findings imply that the Pap1 protein is involved in basal and inducible transcription of the gst I gene in the fission yeast S. pombe.

Transcriptional Regulation of the Gene Encoding g-Glutamylcysteine Synthetase from the Fission Yeast Schizosaccharomyces pombe: Su-Jung Kim , Hong-Gyum Kim , Byung-Chul Kim , Kyunghoon Kim , Eun-Hee Park , Chang-Jin Lim; J. Microbiol. 2004;42(3):233-238.; DOI: https://doi.org/2083 [pii]

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Abstract: Transcriptional regulation of the Schizosaccharomyces pombe [gamma]-glutamylcysteine synthetase (GCS) gene was examined using the two GCS-lacZ fusion plasmids pUGCS101 and pUGCS102, which harbor 607 bp and 447 bp upstream regions, respectively. The negatively-acting sequence was located in the -607 ~ -447 bp upstream region of the GCS gene. The upstream sequence responsible for induction by menadione (MD) and L-buthionine-(S, R)-sulfoximine (BSO) resides in the -607 ~ -447 bp region, whereas the sequence which codes for nitric oxide induction is located within the -447 bp region, measured from the translational initiation point. Carbon source-dependent regulation of the GCS gene appeared to be dependent on the nucleotide sequence within -447 bp region. The transcription factor Pap1 is involved in the induction of the GCS gene by MD and BSO, but not by nitric oxide. Induction of the GCS gene occurring due to low glucose concentration does not depend on the presence of Pap1. These data imply that induction by MD and BSO may be mediated by the Pap1 binding site, probably located in the -607 ~ -447 region, and also that the nitric oxide-mediated regulation of the S. pombe GCS gene may share a similar mechanism with its carbon-dependent induction.

Journal Article

Schizosaccharomyces pombe rsm1 Genetically Interacts with spmex67, Which Is Involved in mRNA Export: Jin Ho Yoon; J. Microbiol. 2004;42(1):32-36.; DOI: https://doi.org/2004 [pii]

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Abstract: We have previously isolated three synthetic lethal mutants from Schizosaccharomyces pombe in order to identify mutations in the genes that are functionally linked to spmex67 with respect to mRNA export. A novel rsm1 gene was isolated by complementation of the growth defect in one of the synthetic lethal mutants, SLMex1. The rsm1 gene contains no introns and encodes a 296 amino-acid-long protein with the RING finger domain, a C3HC4 in the N-terminal half. The [delta]rsm1 null mutant is viable, but it showed a slight poly(A)^+ RNA accumulation in the nucleus. Also, the combination of [delta]rsm1 and [delta]spmex67 mutations confers synthetic lethality that is accompanied by the severe poly(A)^+ RNA export defect. These results suggest that rsm1 is involved in mRNA export from the nucleus.

Research Support, Non-U.S. Gov't

Nitrogen Depletion Causes Up-Regulation of Glutathione Content and γ-Glutamyltranspeptidase in Schizosaccharomyces pombe: Seung-Hyun Song , Chang-Jin Lim; J. Microbiol. 2008;46(1):70-74.; DOI: https://doi.org/10.1007/s12275-007-0244-y

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Abstract: This work aims to elucidate the relationship between nitrogen depletion and Glutathione (GSH) level in Schizosaccharomyces pombe. The total GSH level was much higher in the Pap1-positive KP1 cells than in the Pap1-negative TP108-3C cells, suggesting that synthesis of GSH is dependent on Pap1. When the Pap1-positive KP1 cells were transferred to the nitrogen-depleted medium, total GSH level significantly increased up to 6 h and then slightly declined after 9 h. Elevation of the total GSH level was observed to be much less with the Pap1-negative cells. However, glucose deprivation was not able to enhance the GSH level in the KP1 cells. Activity of γ-glutamyltranspeptidase (γ-GT), an enzyme in the first step of GSH catabolism, also increased during nitrogen depletion. The total GSH level was more significantly enhanced in the KP1 cells overexpressing γ-GT2 than γ-GT1 during nitrogen starvation. Reactive oxygen species (ROS) levels were not changed during nitrogen starvation in both Pap1-positive and Pap1-negative cells. Collectively, nitrogen depletion causes up-regulation of GSH synthesis and γ-GT in a Pap1-dependent manner.

Sequence analysis of the schizosaccharomycs pombe homologue of the CDC3 gene in saccharomyces cerevisiae: Kim , Hyong Bai; J. Microbiol. 1995;33(4):350-354.

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Abstract: Saccharomyces cervisiae has a highly ordered ring of filaments that lies just inside the cytoplasmic membrane in the region of the mother-bud neck. Mutants defective in any one of the our cell division cycle genes (CDC3, CDC10, CDC11, CDC12) fail to form these filaments and exhibit a pleiotropic phenotype that includes failure to complete cytokinesis and abnormal bud growth. However, the role of the filament is not clear. In order to find out the role of filament, the similar gene in S pombe (called cdc103^+) to the CDC3 was cloned and sequenced. Here I report the sequence analysis of the cdc103^+) to the CDC3 was cloned and sequenced. Here I report the sequence analysis of the cdc103^+. Comparison of the predicted amino acid sequences of cdc103^+ and CDC3 revealed that they share significant similarity (43% identity and 56% identity or similarity) to each other.

Immunofluorescence localization of schizosacharomjyces pombe cdc103^+ gene product: Kim , Hyong Bai; J. Microbiol. 1996;34(3):248-254.

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Abstract: cdc103^+ gene in Schizosaccharomyces pombe which is similar to the CDC3 gene in Saccharomyces cerevisiae was cloned and sequenced. Comparison of the predicted amino acid sequences of cdc103^+ and CDC3 revealed that they share significant similarity (43% identity and 56% identity or similarity) to each other. The gene product of CDC3 S. cerevisiae is known to be a highly ordered ring of filaments that lies just inside the cytoplasmic membrane in the region of the mother-bud neck. In order to characterize the gene product of cdc103^+ in Schizosaccharomyces pombe, fusion proteins were used to generate the polyclonal antibodies specific for the gene product (cdc103p). In immunofluorescence experiments, these antibodies decorate the region of the septum formation as a double ring structure late in the cell division cycle.

The Schizosaccharomyces pombe Proteins that Bind to the Human HnRNPA1 Winner RNA: Kim , Jeong Kook; J. Microbiol. 1997;35(4):327-333.

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Abstract: Although extensively characterized in human cells, no heterogeneous nuclear ribonucleoprotein(hnRNP) has been found in the fission yeast Schizosaccharomyces pombe which is amenable to genetic studies and more similar to mammals than Saccharomyces cerevisiae is in terms of RNA processing. As a first step to characterize hnRNPs from S. pombe, attempt was made to find human hnRNP A1 homologs from S. pombe. The RNA molecule (A1 winner) containing the consensus high-affinity hnRNP A1 binding site (UAGGGA/U) was synthesized in vitro and used in an ultraviolet(UV) light-induced protein-RNA cross-linking assay. A number of S, pombe proteins bound to the A1 winner RNA. An approximately 50-kDa protein(p50) cross-linked more efficiently to the A1 winner RNA than other proteins. The p50 protein did not cross-link to a nonspecific RNA, but rather to the A1-5’ SS RNA in which the consensus 5’ splice junction sites of S. pombe introns were abolished. This suggests that the p50 protein, however, did not bind to the single-stranded DNA to shich the human hnRNP A1 could bind and be eluted with 0.5M NaCl. Further analysis should reveal more features of this RNA-binding protein.

Isolation and characterization of pre-tRNA^Val splicing Mutants of Schizosaccharomyces pombe: Hwang, Ku Chan , Kim, Dae Myung; J. Microbiol. 1997;35(4):334-340.

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Abstract: A collection of 132 temperature sensitive (ts) mutants was generated by the chemical mutagenesis of Schizosaccharomyces pombe wild type strain and screened for tRNA splicing defects on Northern blots by hybridization with an oligonucleotide that recognizes the exon of the S. pombe tRNA^Val as a probe. We identidied 6 mutants which accumulate precursor tRNA^Val. Among them, 2 mutants exhibited remarkable morphological differences compared to wild type cells. One tRNA splicing mutant showed elongated cell shape in permissive as well as non-permissive cultures. The other mutant exhibited shortened cell morphology only in nonpermissive culture. The total RNA pattern in the splicing mutants appeared to be normal. Genetic analysis of four tRNA^Val splicing mutants demonstrated that the mutation reside in different genes.

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