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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 李芳仁 | |
dc.contributor.author | Han-Sheng Cheng | en |
dc.contributor.author | 鄭涵聲 | zh_TW |
dc.date.accessioned | 2021-05-20T20:26:37Z | - |
dc.date.available | 2013-09-11 | |
dc.date.available | 2021-05-20T20:26:37Z | - |
dc.date.copyright | 2008-09-11 | |
dc.date.issued | 2008 | |
dc.date.submitted | 2008-08-25 | |
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Ribonucleases involved in eukaryotic mRNA turnover. In mRNA Metabolism and Post-Transcriptional Gene Regulation. J.B. Harford and D.R. Morris, editors. Wiley- Liss, Inc., New York. 217–240. Schwartz, D.C. and Parker, R. 1999. Mutations in translation initiation factors lead to increased rates of deadenylation and decapping of mRNAs in Saccharomyces cerevisiae. Mol. Cell. Biol. 19: 5247–5256. Sheth, U. and Parker, R. 2003. Decapping and decay of messenger RNA occur in cytoplasmic processing bodies. Science 300: 805–808. Sparkman, O. David (2000). Mass spectrometry desk reference. Pittsburgh: Global View Pub. ISBN 0-9660813-2-3. Tebo, J., Der, S., Frevel, M., Khabar, K. S. A., Williams, B. R. G., and Hamilton, T. A. (2003) J. Biol. Chem. 278, 12085–12093 Teixeira, D., Sheth, U., Valencia-Sanchez, M.A., Brengues, M., and Parker, R. 2005. Processing bodies require RNA for assembly and contain nontranslating mRNAs. RNA 11: 371– 382.42. Tian, Q., Streuli, M., Saito, H., Schlossman, S. F., and Anderson, P. (1991) Cell 67, 629–639 Tharun, S. and Parker, R. 2001. Targeting an mRNA for decapping: Displacement of translation factors and association of the Lsm1p–7p complex on deadenylated yeast mRNAs. Mol. Cell 8: 1075–1083. Tourriere, H., K. Chebli, and J. Tazi. 2002. mRNA degradation machines in eukaryotic cells. Biochimie. 84:821–837. Tucker, M., Valencia-Sanchez, M.A., Staples, R.R., Chen, J., Denis, C.L., and Parker, R. 2001. The transcription factor associated Ccr4 and Caf1 proteins are components of the major cytoplasmic mRNA deadenylase in Saccharomyces cerevisiae. Cell 104: 377–386. Tucker, M., Staples, R.R., Valencia-Sanchez, M.A., Muhlrad, D., and Parker, R. 2002. Ccr4p is the catalytic subunit of a Ccr4p/Pop2p/Notp mRNA deadenylase complex in Saccharomyces cerevisiae. EMBO J. 21: 1427–1436. van Hoof A, Lennertz P, Parker R+ 2000a+ Yeast exosome mutants accumulate 39-extended polyadenylated forms of U4 small nuclear RNA and small nucleolar RNAs+ Mol Cell Biol 20:441–452+ van Hoof A, Staples RR, Baker RE, Parker R+ 2000b+ Function of the ski4p (Csl4p) and ski7p proteins in 39-to-59 degradation of mRNA+ Mol Cell Biol 20:8230–8243+ van Hoof A, Parker R. 2002. Curr. Biol. 12(8):285–87 Vasudevan, S., and S. W. Peltz. 2001. Regulated ARE-mediated mRNA decay in Saccharomyces cerevisiae. Mol. Cell 7:1191–1200 Wang, Z., and M. Kiledjian. 2001. Functional link between the mammalian exosome and mRNA decapping. Cell. 107:751–762. Wilusz, C. J., M. Wormington, and S. W. Peltz. 2001. The cap-to-tail guide to mRNA turnover. Nat. Rev. Mol. Cell Biol. 2:237–246. Zhang, S., Williams, C.J., Hagan, K., and Peltz, S.W. 1999. Mutations in VPS16 and MRT1 stabilize mRNAs by activating an inhibitor of the decapping enzyme. Mol. Cell. Biol. 19: 7568–7576. | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/9520 | - |
dc.description.abstract | 在真核細胞中,基因的表現在轉錄後會受到很多方面的調控,例如訊息核醣核酸的修飾、運送、降解,以及最後訊息核唐核酸要轉譯成蛋白質的過程,在這些調控的步驟中有許多可以和核醣核酸結合的蛋白質來協助調控的過程,這些蛋白質稱為核醣核酸結合蛋白。本實驗室在過去發現一個在酵母菌中可以與核醣核酸結合的蛋白質Rbp1p,最初它被鑑定為抑制細胞生長的負調控因子,結構上它包含三個核醣核酸識別基序RRM及兩個富含麩氨酸區域,我們已知這個Rbp1p在酵母菌生長階段的晚期、葡萄糖剝奪、滲透壓力下可以作落到細胞質中特殊的細胞質聚集顆粒P-bodies,並且經由二次元電泳的分析顯示Rbp1p分布在同一個分子量上但不同的等電點,暗示Rbp1p可能含有不同的轉譯後修飾,在本論文中再次利用二次元電泳的分析發現Rbp1p在生長階段的不同二維電泳上圖譜也會不同,我們推測外界的刺激會使Rbp1p被轉譯後修飾所調控,我們藉由質譜儀的分析找到了六個磷酸化的點,利用單點突變的技術將它們突變為丙氨酸,實驗證明同時突變其中的三個點459、462、463則Rbp1p負生長因子的能力下降,且突變型的Rbp1p在二維電泳上呈現的圖譜和野生型Rbp1p不同,但是這三個點的突變並不會影響Rbp1p坐落到P-bodies,同時我們也研究一個Rbp1p可能的磷酸激酶Ksp1p,我們發現剔除Ksp1p後Rbp1p負生長因子的能力也會下降,若挽回Ksp1的表現則Rbp1p負生長因子的能力又回復了,剔除Ksp1p後也會影響到Rbp1p在二次元電泳圖譜上的分布,但是剔除Ksp1p後依然不會影響Rbp1p坐落到P-bodies。這樣的結果說明了Ksp1p對於Rbp1p抑制生長的功能以及Rbp1p的轉譯後修飾是重要的。另外在本研究中我們藉由質譜儀的分析鑑定出Rbp1p在二次元電泳上每一個點的轉譯後修飾,並且也找到幾個可能與Rbp1p結合的蛋白質包括Dhh1p、Hrp1p、Porin1p、Psp1p以及 Pub1p。 | zh_TW |
dc.description.abstract | In eukaryotic cells gene expression subjected several level of posttranscriptional regulation included mRNA processing, transport, turnover, and tanslation regulation.
Above regulation process involves various of RNA-binding proteins to support. Previously our lab found the Saccharomyces cerevisiae RNA-binding protein Rbp1p was first identified as a negative growth regulator, which contains three copies of an RNA recognition motif (RRM) and two glutamine-rich stretches. We have known that Rbp1p can localize to specific cytoplasm foci called P body when cell growth to stationary phase, glucose deprivation, and osmotic stress. Rbp1p revealed mutiple spot with the same molecular weight but different isoeletric points in 2-DE analysis. This result suggested that Rbp1p contained diverse post-translational modification. In this study using 2-DE analysis found under different growth stage, Rbp1p subjected to different post-translational modification. We speculated that when cell received external stimulus Rbp1p may regulated by post-translational modification. We also found six phosphorylation sites of Rbp1p by means of mass spectrometry. Using site-directed mutagenesis technique to produce phosphorylation sites mutants of Rbp1p. Data revealed simultaneously mutation on serine 459, 462, and 463 to alanine show partial growth inhibition ability lost. Compare to wild Rbp1p the mutant form show different post-translational modification pattern in 2-DE gel. However the mutant of Rbp1p had no effect to localize to P body. In addition we also studied a putative Rbp1p kinase Ksp1p, found that Rbp1p growth inhibition ability lost in Δksp1 strain. Futhermore, in rescue experiment where ADH drove Myc-Ksp1p overexpression in Δksp1 cells, Rbp1p restored its growth inhibition ability. However Ksp1p deletion had no effect on the localization of Rbp1p to P-body. These result suggested thatKsp1p is important for the function of Rbp1p, at least in growth phenotype and post-translational modification. Besides, in this study we determined each of the multiple post-translational modification spots of Rbp1p by mass spectrometry. Moreove we also identified several Rbp1p associated protein included Dhh1p, Hrp1p, Porin1p, Psp1p, and Pub1p. | en |
dc.description.provenance | Made available in DSpace on 2021-05-20T20:26:37Z (GMT). No. of bitstreams: 1 ntu-97-R95448008-1.pdf: 3121669 bytes, checksum: 22576fb86de4203bdc9fe76c389b5157 (MD5) Previous issue date: 2008 | en |
dc.description.tableofcontents | 中文摘要 1
Abstract 2 Introduction 3 Results 9 I. To demostrate under different growth stage, Rbp1p subjected to different post-translational modification. 9 II. Functional characterization of the phosphorylation sites of Rbp1 9 III. Functional characterization of the putative Rbp1p kinase 11 IV. To determine each of the multiple post-translational modification spots of Rbp1p by mass spectrometry 12 V. To identify Rbp1p-interacting protein 13 Discussion 15 Materials and Methods 19 Figures 25 Figure 1. Rbp1p displayed different pattern in log phase and stationary phase of cell growth in 2-DE gel 25 Figure 2. Growth phenotypes of cells expressing HA-Rbp1p, -dN or phosphorylation sites mutants in YPH499 strains. 27 Figure 3. Growth phenotypes of cells expressing HA-Rbp1p, -dN or phosphorylation sites mutants in BY4741 strains. 28 Figure 4. The post-translational modification of Rbp1p affected by mutation on Ser-459,462,463. 29 Figure 5. P-body localization of Rbp1p was not affected by mutation on Ser-459,462,463 30 Figure 6. Growth phenotypes of cells expressing HA-Rbp1p or Myc-Ksp1p in YPH499 wild type or ksp1p deletion strains. 31 Figure 7. The post-translational modification of Rbp1p affected by Ksp1p deletion. 32 Figure 8. P-body localization of Rbp1p is not affected by Ksp1p deletion. 33 Figure 9. Rbp1p and its associated proteins. 34 Figure10. Rbp1p associated proteins 36 Tables 37 Table 1. Yeast strains used in this study. 37 Table 2. Primers used in this study. 38 Table 3. A brief summary of plasmids used in this study. 39 Table 4. Antibodies used in this study. 40 Table 5. Rbp1p associated proteins 41 Table 6. Each of the multiple post-translational modification spots of Rbp1p 42 Appendix 43 Appendix 1. HA-Rbp1p reveal mutiple spots with the same molecular weight but different isoeletric points in 2-DE western analysis. 43 Appendix 2. Rbp1p is a phosphorylated protein. 44 References 45 | |
dc.language.iso | en | |
dc.title | 探討酵母菌核醣核酸蛋白Rbp1p之轉譯後修飾 | zh_TW |
dc.title | Characterization of post-translational modification of RNA binding protein 1, Rbp1p, in Saccharomyces cerevisiae | en |
dc.type | Thesis | |
dc.date.schoolyear | 96-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 鄧述諄,游佳融,譚婉玉 | |
dc.subject.keyword | 酵母菌,核醣核酸蛋白,轉譯後修飾, | zh_TW |
dc.subject.keyword | Rbp1p, | en |
dc.relation.page | 53 | |
dc.rights.note | 同意授權(全球公開) | |
dc.date.accepted | 2008-08-25 | |
dc.contributor.author-college | 醫學院 | zh_TW |
dc.contributor.author-dept | 分子醫學研究所 | zh_TW |
顯示於系所單位: | 分子醫學研究所 |
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