HpaB C-末端的两个谷氨酸参与Ⅲ型效应物蛋白的分泌和转运

来源 :中国植物病理学会第十一届青年学术研讨会 | 被引量 : 0次 | 上传用户：jasongoes

【摘要】

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【作者】

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甘永亮于凯杨丽超阳丽艳姜伯乐

【机构】

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广西大学生命科学与技术学院,南宁530004 广西大学生命科学与技术学院,南宁530004;亚热带

【出处】

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中国植物病理学会第十一届青年学术研讨会

【发表日期】

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2013年11期

【关键词】

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十字花科黑腐病菌 Ⅲ型分泌分子伴侣 HpaB 分泌转运

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　　十花科黑腐病菌(Xanthomonascampestris pv campestris,Xcc)利用一个全局性的Ⅲ型分泌分子伴侣(TypeⅢsecretion chaperone) HpaB将效应物蛋白高效地注入至寄主细胞内。将HpaB C-末端缺失,发现缺失突变体在寄主满身萝卜的致病性锐减以及在非寄主辣椒ECW-1 0R的过敏反应(hypersensitive response,HR)丧失,暗示HpaB的C-末端对效应物蛋白的分泌和转运具有贡献。定点突变实验表明,C-末端的两个极性氨基酸E145和E148在一些效应物蛋白的分泌和转运过程中起重要作用。

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HpaB C-末端的两个谷氨酸参与Ⅲ型效应物蛋白的分泌和转运

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