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甜瓜叶片中Rubisco的去除及双向电泳体系的优化
引用本文:钟俐,马成梅,梁永增,李冠.甜瓜叶片中Rubisco的去除及双向电泳体系的优化[J].植物生理学通讯,2012(3):303-309.
作者姓名:钟俐  马成梅  梁永增  李冠
作者单位:新疆大学生命科学与技术学院,乌鲁木齐830046
基金项目:国家自然科学基金(31060148); 新疆维吾尔自治区自然科学基金(2011211A013); 新疆维吾尔自治区高技术研究发展项目(201111120)
摘    要:为降低Rubisco的干扰,建立适合于甜瓜叶片蛋白质的双向电泳技术,本文比较了不同全蛋白提取方法和上样量对双向电泳的影响。结果表明,Mg/NP-40/PEG3350/TCA/丙酮提取法可去除样品中绝大多数的Rubisco,使低丰度蛋白得以检测,适合后续分析。以该法提取的蛋白,采用600、800、1000和l200μg四种上样量进行双向电泳,上样量为l000μg的样品用pH3~10的IPG胶条,在2-DE胶上分辨出质量好、数量多的蛋白质点(562个)。因此,Mg/NP-40/PEG3350/TCA/丙酮法是适合甜瓜叶片蛋白质提取的方法,l000μg是最适上样量。

关 键 词:甜瓜  Rubisco  蛋白质提取  双向电泳  上样量

Depletion of Rubisco from Cucumis melon Leaf and Optimization of Two-Dimensional Electrophoresis for Proteome
ZHONG Li,MA Cheng-Mei,LIANG Yong-Zeng,LI Guan.Depletion of Rubisco from Cucumis melon Leaf and Optimization of Two-Dimensional Electrophoresis for Proteome[J].Plant Physiology Communications,2012(3):303-309.
Authors:ZHONG Li  MA Cheng-Mei  LIANG Yong-Zeng  LI Guan
Affiliation:*College of Life Science and Technology,Xinjiang University,Urumqi 830046,China
Abstract:This research compared the effects of different methods of protein extraction of Cucumis melon leaves and different loading amounts on 2-DE profile.The results indicated that Mg/NP-40/PEG3350/TCA/acetone precipitation was a suitable method for subsequent analysis attributed to reducing the interference of Rubisco.There were 562 proteins could be well resolved and detected in the gels when l 000 μg protein of leaves was loading with pH 3-10 IPG strips.All the results showed that Mg/NP-40/PEG3350 TCA/acetone precipitation was much more suitable for protein extraction and l 000 μg was the optimum loading amount of Cucumis melon leaves.
Keywords:Cucumis melo L    Rubisco  protein extraction  two-dimensional electrophoresis(2-DE)  loading quantity of sample
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