| 植物U-box蛋白研究进展 |
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| 引用本文： | 李魏,戴良英,王国梁.植物U-box蛋白研究进展[J].江西农业学报,2007,19(7):11-14. |
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| 作者姓名： | 李魏 戴良英 王国梁 |
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| 作者单位： | 1. 湖南农业大学,生物安全科学技术学院,湖南,长沙,410128;湖南农业大学,水稻基因组学实验室,湖南,长沙,410128
2. 湖南农业大学,水稻基因组学实验室,湖南,长沙,410128;美国俄亥俄州立大学,植物病理系,哥伦布,俄亥俄,43210 |
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| 基金项目： | 教育部高等学校博士学科点专项科研基金
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国家自然科学基金
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国家重点基础研究发展计划(973计划)
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湖南省教育厅科研项目 |
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| 摘 要： | U-box结构是真核生物体内尤其是植物中广泛存在的一种高度保守的基序,其构象与RING-finger极其相似,两者都能发挥泛素连接酶E3的作用,促进底物蛋白泛素化降解。U-box基序还是泛素链聚集酶E4最主要的功能因子。在植物体内U-box经常与ARM重复耦联形成U-box/ARM结构,影响蛋白-蛋白互作,参与信号传导级联反应。许多植物U-box蛋白(PUB)能有效提高植株对干旱、高盐、异常温度等非生物胁迫的抵抗能力。此外,在植物对许多病原物的抗病反应中也需要U-box蛋白的参与。
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| 关 键 词： | U-box蛋白 泛素化 ARM重复 非生物胁迫 抗病性 植物 |
| 文章编号： | 1001-8581（2007）07-0011-04 |
| 收稿时间： | 2007-03-25 |
| 修稿时间： | 2007-03-25 |
Recent Advances in Study for Plant U-box Proteins |
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| LI Wei,DAI Liang-ying,WANG Guo-liang.Recent Advances in Study for Plant U-box Proteins[J].Acta Agriculturae Jiangxi,2007,19(7):11-14. |
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| Authors: | LI Wei DAI Liang-ying WANG Guo-liang |
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| Institution: | 1. College of Bio- safety Sciences and Technology, Hunan Agricultural University,Changsha 410128 ,China; 2. Rice Genomies Laboratory, Hunan Agricultural University, Changsha 410128, China; 3. Department of Plant Pathology, The Ohio State University, Columbus 43210, USA |
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| Abstract: | U-box domain was a high conserved motif existing widely in eukaryotes,especially in plants.The domain of U-box was similar to that of the RING-finger.Both U-box motif and RING-finger could function as ubiquitin-ligase E3 to catalyze the target proteins ubiquitinated degradation.The U-box motif also was the main functional factor of ubiquitin chain assembly enzyme E4.In plant,U-box usually conjugates with ARM repeats to form the U-box/ARM repeats structure which involved in protein-protein interactions and signal transduction cascade reactions.Many plant U-box proteins could efficiently enhance plants defense to abiotic stresses such as drought,high salinity and abnormal temperature.In addition,U-box proteins were required in plants resistance response to pathogens. |
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| Keywords: | U-box protein Ubiquitination ARM repeat Abiotic stress Disease resistance Plant |
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