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建立基于 - 的无细胞蛋白合成系统。

Establishing a -Based Cell-Free Protein Synthesis System.

机构信息

School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China.

Clinical Pathology Center, The Fourth Affiliated Hospital of Anhui Medical University, Hefei 230012, China.

出版信息

Molecules. 2022 Jul 22;27(15):4684. doi: 10.3390/molecules27154684.

Abstract

Cell-free protein synthesis (CFPS) systems are emerging as powerful platforms for in vitro protein production, which leads to the development of new CFPS systems for different applications. To expand the current CFPS toolkit, here we develop a novel CFPS system derived from a chassis microorganism , an important industrial host for heterologous protein expression and the production of many useful chemicals. First, we engineered the strain by deleting a capsule formation-associated gene. This capsule-deficient strain enabled easy collection of the cell biomass for preparing cell extracts. Then, we optimized the procedure of cell extract preparation and the reaction conditions for CFPS. Finally, the optimized CFPS system was able to synthesize a reporter protein (superfolder green fluorescent protein, sfGFP) with a maximum yield of 253 ± 15.79 μg/mL. Looking forward, our -based CFPS system will not only expand the toolkit for protein synthesis, but also provide a new platform for constructing in vitro metabolic pathways for the synthesis of high-value chemicals.

摘要

无细胞蛋白质合成(CFPS)系统作为体外蛋白质生产的强大平台正在兴起,这导致了针对不同应用的新 CFPS 系统的发展。为了扩展当前的 CFPS 工具包,我们在这里开发了一种新型 CFPS 系统,该系统源自底盘微生物,底盘微生物是用于异源蛋白表达和生产许多有用化学品的重要工业宿主。首先,我们通过删除与荚膜形成相关的基因对 菌株进行了工程改造。这种无荚膜缺陷的菌株能够方便地收集细胞生物质,用于制备细胞提取物。然后,我们优化了细胞提取物制备过程和 CFPS 的反应条件。最后,优化的 CFPS 系统能够合成报告蛋白(超折叠绿色荧光蛋白,sfGFP),最大产量为 253±15.79μg/mL。展望未来,我们基于 的 CFPS 系统不仅将扩展蛋白质合成工具包,还将为构建用于高价值化学品合成的体外代谢途径提供新平台。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ffe0/9330377/63aee06e9d26/molecules-27-04684-g001.jpg

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