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维基百科

核糖體分流

核糖體分流(Ribosome shunting)為真核生物細胞的核糖體轉譯一些病毒mRNA時,在掃描mRNA的過程中跳過5′非翻译区部分二級結構複雜的序列,直接與該序列下游的序列結合的機制[1],最早於1990年代在花椰菜嵌紋病毒(CaMV)的mRNA中發現[2]。許多病毒mRNA的核糖體分流需仰賴其5′非翻译区的上游开放阅读框(uORF),核糖體完成uORF的轉譯後(通常僅有2-15個密碼子),60S核糖体亚基自核糖體脫離,40S核糖体亚基則跳過(take-off)mRNA下游5-10nt處一段二級結構複雜的序列,與下游的降落位點(landing site)結合,再重新開始掃描,找到下一個開放閱讀框起始密碼子後再次與60S亚基結合而開始轉譯[2][3]

已知腺病毒[4]仙台病毒[5][6]人類乳突病毒(HPV)、人泡沫病毒英语Human foamy virus[2]鴨B型肝炎病毒[2]水稻东格鲁桿狀病毒英语Tungrovirus(RTBV)[7]與花椰菜嵌紋病毒[8]等多種病毒的mRNA轉譯都有核糖體分流的機制。

參考文獻 编辑

  1. ^ Edgil, D; Polacek, C; Harris, E. Dengue virus utilizes a novel strategy for translation initiation when cap-dependent translation is inhibited. Journal of Virology. 2006, 80 (6): 2976–86. PMC 1395423 . PMID 16501107. doi:10.1128/JVI.80.6.2976-2986.2006. 
  2. ^ 2.0 2.1 2.2 2.3 Pooggin MM, Ryabova LA. Ribosome Shunting, Polycistronic Translation, and Evasion of Antiviral Defenses in Plant Pararetroviruses and Beyond.. Front Microbiol. 2018, 9: 644. PMC 5902531 . PMID 29692761. doi:10.3389/fmicb.2018.00644. 
  3. ^ Roger Hull. Chapter 6 - Genome Composition, Organization, and Expression. Plant Virology (Fifth Edition). Academic Press. 2014 [2021-12-05]. doi:10.1016/B978-0-12-384871-0.00006-6. (原始内容于2021-12-05). 
  4. ^ Yueh, A; Schneider, RJ. Selective translation initiation by ribosome jumping in adenovirus-infected and heat-shocked cells. Genes & Development. 1996, 10 (12): 1557–67. PMID 8666238. doi:10.1101/gad.10.12.1557 . 
  5. ^ De Breyne, S; Simonet, V; Pelet, T; Curran, J. Identification of a cis-acting element required for shunt-mediated translational initiation of the Sendai virus Y proteins. Nucleic Acids Research. 2003, 31 (2): 608–18. PMC 140508 . PMID 12527769. doi:10.1093/nar/gkg143. 
  6. ^ Latorre, P; Kolakofsky, D; Curran, J. Sendai virus Y proteins are initiated by a ribosomal shunt. Molecular and Cellular Biology. 1998, 18 (9): 5021–31. PMC 109087 . PMID 9710586. doi:10.1128/mcb.18.9.5021. 
  7. ^ Pooggin, M. M.; Ryabova, LA; He, X; Fütterer, J; Hohn, T. Mechanism of ribosome shunting in Rice tungro bacilliform pararetrovirus. RNA. 2006, 12 (5): 841–50. PMC 1440904 . PMID 16556934. doi:10.1261/rna.2285806. 
  8. ^ Pooggin, MM; Hohn, T; Fütterer, J. Role of a short open reading frame in ribosome shunt on the cauliflower mosaic virus RNA leader. The Journal of Biological Chemistry. 2000, 275 (23): 17288–96. PMID 10747993. doi:10.1074/jbc.M001143200 . 

核糖體分流, ribosome, shunting, 為真核生物細胞的核糖體轉譯一些病毒mrna時, 在掃描mrna的過程中跳過5, 非翻译区部分二級結構複雜的序列, 直接與該序列下游的序列結合的機制, 最早於1990年代在花椰菜嵌紋病毒, camv, 的mrna中發現, 許多病毒mrna的需仰賴其5, 非翻译区的上游开放阅读框, uorf, 核糖體完成uorf的轉譯後, 通常僅有2, 15個密碼子, 60s核糖体亚基自核糖體脫離, 40s核糖体亚基則跳過, take, mrna下游5, 10nt處一段二級結構複雜. 核糖體分流 Ribosome shunting 為真核生物細胞的核糖體轉譯一些病毒mRNA時 在掃描mRNA的過程中跳過5 非翻译区部分二級結構複雜的序列 直接與該序列下游的序列結合的機制 1 最早於1990年代在花椰菜嵌紋病毒 CaMV 的mRNA中發現 2 許多病毒mRNA的核糖體分流需仰賴其5 非翻译区的上游开放阅读框 uORF 核糖體完成uORF的轉譯後 通常僅有2 15個密碼子 60S核糖体亚基自核糖體脫離 40S核糖体亚基則跳過 take off mRNA下游5 10nt處一段二級結構複雜的序列 與下游的降落位點 landing site 結合 再重新開始掃描 找到下一個開放閱讀框的起始密碼子後再次與60S亚基結合而開始轉譯 2 3 已知腺病毒 4 仙台病毒 5 6 人類乳突病毒 HPV 人泡沫病毒 英语 Human foamy virus 2 鴨B型肝炎病毒 2 水稻东格鲁桿狀病毒 英语 Tungrovirus RTBV 7 與花椰菜嵌紋病毒 8 等多種病毒的mRNA轉譯都有核糖體分流的機制 參考文獻 编辑 Edgil D Polacek C Harris E Dengue virus utilizes a novel strategy for translation initiation when cap dependent translation is inhibited Journal of Virology 2006 80 6 2976 86 PMC 1395423 nbsp PMID 16501107 doi 10 1128 JVI 80 6 2976 2986 2006 2 0 2 1 2 2 2 3 Pooggin MM Ryabova LA Ribosome Shunting Polycistronic Translation and Evasion of Antiviral Defenses in Plant Pararetroviruses and Beyond Front Microbiol 2018 9 644 PMC 5902531 nbsp PMID 29692761 doi 10 3389 fmicb 2018 00644 Roger Hull Chapter 6 Genome Composition Organization and Expression Plant Virology Fifth Edition Academic Press 2014 2021 12 05 doi 10 1016 B978 0 12 384871 0 00006 6 原始内容存档于2021 12 05 Yueh A Schneider RJ Selective translation initiation by ribosome jumping in adenovirus infected and heat shocked cells Genes amp Development 1996 10 12 1557 67 PMID 8666238 doi 10 1101 gad 10 12 1557 nbsp De Breyne S Simonet V Pelet T Curran J Identification of a cis acting element required for shunt mediated translational initiation of the Sendai virus Y proteins Nucleic Acids Research 2003 31 2 608 18 PMC 140508 nbsp PMID 12527769 doi 10 1093 nar gkg143 Latorre P Kolakofsky D Curran J Sendai virus Y proteins are initiated by a ribosomal shunt Molecular and Cellular Biology 1998 18 9 5021 31 PMC 109087 nbsp PMID 9710586 doi 10 1128 mcb 18 9 5021 Pooggin M M Ryabova LA He X Futterer J Hohn T Mechanism of ribosome shunting in Rice tungro bacilliform pararetrovirus RNA 2006 12 5 841 50 PMC 1440904 nbsp PMID 16556934 doi 10 1261 rna 2285806 Pooggin MM Hohn T Futterer J Role of a short open reading frame in ribosome shunt on the cauliflower mosaic virus RNA leader The Journal of Biological Chemistry 2000 275 23 17288 96 PMID 10747993 doi 10 1074 jbc M001143200 nbsp 取自 https zh wikipedia org w index php title 核糖體分流 amp oldid 70225451, 维基百科,wiki,书籍,书籍,图书馆,

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