A novel cell-free translation system is described in which template-mRNA molecules were captured onto solid surfaces to simultaneously synthesize and immobilize proteins in a more native-state form. This technology comprises a novel solid-phase approach to cell-free translation and RNA-protein fusion techniques. A newly constructed biotinylated linker-DNA which enables puromycin-assisted RNA-protein fusion is ligated to the 3' ends of the mRNA molecules to attach the mRNA-template on a streptavidin-coated surface and further to enable the subsequent reactions of translation and RNA-protein fusion on surface. The protein products are therefore directly immobilized onto solid surfaces and furthermore were discovered to adopt a more native state with proper protein folding and superior biological activity compared with conventional liquid-phase approaches. We further validate this approach via the production of immobilized green fluorescent protein (GFP) on microbeads and by the production and assay of aldehyde reductase (ALR) enzyme with 4-fold or more activity. The approach developed in this study may enable to embrace the concept of the transformation of 'RNA chip-to-protein chip' using a solid-phase cell-free translation system and thus to the development of high-throughput microarray platform in the field of functional genomics and in vitro evolution.

译文

:描述了一种新颖的无细胞翻译系统,其中模板mRNA分子被捕获到固体表面上,以更天然的形式同时合成和固定蛋白质。该技术包括用于无细胞翻译和RNA蛋白质融合技术的新型固相方法。将能够使嘌呤霉素辅助的RNA-蛋白质融合的新构建的生物素化的接头DNA连接到mRNA分子的3'末端,以将mRNA模板附着在链霉亲和素包被的表面上,并进一步实现翻译和RNA的后续反应-蛋白质在表面融合。因此,将蛋白质产物直接固定在固体表面上,并且与常规液相方法相比,还发现其具有更天然的状态,具有适当的蛋白质折叠和优异的生物学活性。我们通过在微珠上生产固定的绿色荧光蛋白(GFP)以及通过生产和测定具有4倍或更多活性的醛还原酶(ALR)酶来进一步验证这种方法。这项研究中开发的方法可能能够包含使用固相无细胞翻译系统将“ RNA芯片转化为蛋白质芯片”的概念,从而促进高通量微阵列平台的发展。功能基因组学和体外进化。

+1
+2
100研值 100研值 ¥99课程
检索文献一次
下载文献一次

去下载>

成功解锁2个技能,为你点赞

《SCI写作十大必备语法》
解决你的SCI语法难题!

技能熟练度+1

视频课《玩转文献检索》
让你成为检索达人!

恭喜完成新手挑战

手机微信扫一扫,添加好友领取

免费领《Endnote文献管理工具+教程》

微信扫码, 免费领取

手机登录

获取验证码
登录