期刊文献+

小麦黄花叶病毒编码VPg蛋白N端结构是VPg与核仁蛋白Fibrillarin互作区域 被引量:1

N-terminal domain of VPg encoded by Wheat yellow mosaic virus is involved in the interaction with the nucleolar protein Fibrillarin
在线阅读 下载PDF
导出
摘要 小麦黄花叶病毒(Wheat yellow mosaic virus,WYMV)属于马铃薯Y病毒科大麦黄花叶病毒属成员,其基因组是由两条正义单链RNA组成,共编码10个蛋白。其中,VPg(Viral protein genome-linked)作为病毒末端结合蛋白,与病毒基因组RNA 5’端共价连接。利用软件分析WYMV VPg蛋白氨基酸序列发现其N端具有核定位信号(NLS)序列,C端具有核输出信号(NES)序列。通过激光共聚焦显微镜观察VPg与GFP融合蛋白在烟草细胞中的表达情况发现,GFP-VPg主要定位于细胞核中。利用eYFP(n)标记核仁结构蛋白Fibrillarin与VPg进行双分子荧光互补实验发现,VPg与Fibrillarin互作且定位于细胞核中。根据VPg结构特点构建一系列缺失突变体与Fibrillarin的互作实验验证了它们之间的互作区域发生在N端NLS区域。 Wheat yellow mosaic virus ( WYMV ) is a member of the genus Bymovirus in the family Potyviridae. WYMV has two single-stranded positive sense RNA genomes which produce 10 viral proteins .Among those proteins , viral genome-linked protein ( VPg) , which binds to the 5′end of the viral RNA genome , is predicted to contain a nuclear localization signal (NLS) and nuclear export signal (NES) in the N-and C-terminal portions, respectively. WYMV( Wheat yellow mosaic virus) VPg fused to C-terminus of enhanced green florescent protein ( eGFP-VPg) ex-clusively accumulated in the nucleus of epidermal cells of Nicotiana benthamiana plants.Fibrillarin, a nucleolus res-ident protein, was introduced into eYFP(n) plasmid.To investigate the regions of the VPg domain binding fibrilla-rin, a series of VPg mutant and fibrillarin performed BiFC assay .The result display VPg localized and interact with fibrillarin in the nucleus .NLS but not NES is required for interact with fibrillarin .
出处 《浙江农业学报》 CSCD 北大核心 2014年第1期89-94,共6页 Acta Agriculturae Zhejiangensis
基金 农业部小麦产业体系病虫害防控(CARS-3-1-14) 农业部转基因小麦新品种培育子课题(2011ZX08002-001) "现代农业生物技术与作物病害防控"--浙江省高校重中之重学科建设 浙江省植物病毒与组培产业重点领域创新团队(2009R50032)
关键词 小麦黄花叶病毒 VPg蛋白 细胞核定位 Fibrillarin蛋白 蛋白质互作 Wheat yellow mosaic virus VPg protein nuclear localization fibrillarin protein interaction
  • 相关文献

参考文献21

  • 1L6onard S, Plante D, Wittmann S, et al. Complex formation between potyvirus VPg and translation eukaryotic initiation fac- tor 4E correlates with virus infectivity [ J ]. Journal of Virolo- gy, 2000, 74(17): 7730-7737.
  • 2BorgstrOm B, Johansen IE. Mutations in Pea seedborne mosaic virus genome-linked protein VPg alter pathotype-specific viru- lence in Pisum sativum [ J ]. Molecular Plant-Microbe Interac- tions, 2001, 14(6) : 707-714.
  • 3Michon T, Estevez Y, Walter J, et al. The potyviral virus ge- nome-linked protein VPg forms a ternary complex with the eu- karyotie initiation factors elF4E and eIF4G and reduces elF4E affinity for a mRNA cap analogue [ J ]. FEBS Journal, 2006, 273(6) : 1312-1322.
  • 4Miyoshi H, Suehiro N, Tomoo K, et al. Binding analyses for the interaction between plant virus genome-linked protein (VPg) and plant translational initiation factors[J]. Biochim- ie, 2006, 88(3): 329-340.
  • 5Anindya R, Savithri HS. Potyviral NIa proteinase, a protein- ase with novel deoxyribonuclease activity [ J ]. Journal of Bio- logical Chemistry, 2004, 279(31 ) : 32159-32169.
  • 6Cotton S, Dufresne PJ, Thivierge K, et al. The VPgPro pro- tein of Turnip mosaic virus: In vitro inhibition of translation from a ribonuclease activity [ J ]. Virology, 2006, 351 ( 1 ) : 92-100.
  • 7Wang D, Maule AJ. Inhibition of host gene expression associ- ated with plant virus replication [ J ]. Science, 1995, 267 (5195): 229-231.
  • 8Revers F, Le Gall O, Candresse T, et al. New advances in understanding the molecular biology of plant potyvirus interac- tions [ J ]. Molecular Plant-Microbe Interactions, 1999, 12 (5) : 367-376.
  • 9Rajamaki ML, Valkonen JP. Control of nuclear and nueleolar localization of nuclear inclusion protein a of picorna-like Potato virus A in Nieotiana species [ J ]. Plant Cell, 2009, 21 ( 8 ) : 2485-2502.
  • 10Inouye T. Viral pathogen of the wheat yellow mosaic disease [J]. Nogaku Kenkyu, 1969, 53 : 61-68.

二级参考文献42

共引文献37

同被引文献2

引证文献1

二级引证文献4

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部