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Protein Expression
5671 times
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Average 30 working days
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Project Introduction

重组protein表达of系统mainly分for:

原核protein表达系统,酵母protein表达系统,哺乳动物celland昆虫cell表达系统and无cellprotein表达系统. 其中以大肠杆菌表达系统for代表, 具have遗传背景清楚, 成本低, 表达量高and表达产物分离纯化相对simpleetc.优点, 缺点mainlyisprotein翻译后缺乏加工机制, such as二硫键of形成, protein糖基化and正确折叠, 得到具have生物活性ofproteinof几率较小. 异源proteininbacteria中表达isusingofmainlyofprotein生产系统. 大肠杆菌一直ismosteconomicalof系统之一.

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Project Cases

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Sample Requirements

请provideaccurateof目ofgene序列,needof载体信息etc..


FAQ

    表达体系such as何选择?

    原核protein表达系统:以大肠杆菌表达系统for代表, 具have遗传背景清楚, 成本低, 表达量高and表达产物分离纯化相对simpleetc.优点, 缺点mainlyisprotein翻译后缺乏加工机制, such as二硫键of形成, protein糖基化and正确折叠, 得到具have生物活性ofproteinof几率较小.

    酵母protein表达系统:具have表达量高, 可诱导, 糖基化机制接近高etc.真核生物, 分泌protein易纯化, 易实现高密发酵etc.优点. 缺点for部分protein产物易降解, 表达量不可控.

    哺乳动物celland昆虫cell表达系统:mainly优点isprotein翻译后加工机制most接近体内ofdays然形式, most容易保留生物活性, 缺点is表达量usually较低, stableCell Line建立技术难度大, 生产成本高.

    无cellprotein表达系统:is指用含haveprotein合成必需of组分 (核糖体, 转运RNA, 氨酰合成enzyme, 启动/延伸/终止因子, 三磷酸鸟苷,ATP,Mg2+andK+) ofcell裂解物in体外进行protein合成. 无cellprotein表达技术适用于制备各种类型ofprotein, including难表达protein, 毒性protein, 复杂proteinetc..缺点is成本高, 目前没have大规模应用.


 
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