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草业学报  2011 

一种有效检测水稻叶鞘低丰度蛋白的方法

, PP. 192-197

Keywords: 叶鞘,低丰度蛋白,PEG,双向凝胶电泳

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Abstract:

蛋白质组学研究中,低丰度蛋白的富集、检测和鉴定是主要的技术难题。植物组织中核酮糖-1,5-二磷酸羧化/加氧酶(rubisco)等高丰度蛋白占细胞全蛋白很大比例,严重影响双向凝胶电泳(2-DE)对低丰度蛋白的检测。为探索一种适用于叶鞘低丰度蛋白的有效检测方法,本研究采用聚乙二醇(PEG)沉淀法以减少rubisco等高丰度蛋白,富集低丰度蛋白。以Mg/NP-40法为对照,分别使用15%和20%PEG分离水稻叶鞘可溶性全蛋白,并将对照和各PEG分离组分进行2-DE。2-DE图谱经软件分析结果表明,20%PEG沉淀法适用于灌浆期叶鞘低丰度蛋白检测。

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