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Escherichia coli-Based Cell-Free Protein Synthesis: Protocols for a robust, flexible, and accessible platform technology
Published on: February 25, 2019
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Cell-Free Protein Synthesis for High-Throughput Biosynthetic Pathway Prototyping
Blake J Rasor1,2,3, Bastian Vögeli1,2,3, Michael C Jewett4
1Department of Chemical and Biological Engineering, Northwestern University, Evanston, IL, USA.
Methods in Molecular Biology (Clifton, N.J.)
|January 5, 2022
Summary
Cell-free protein synthesis rapidly generates enzyme libraries for metabolic pathway prototyping. This accelerates the discovery of high-yield biosynthesis platforms, outperforming traditional cellular engineering methods.
Area of Science:
- Metabolic Engineering
- Synthetic Biology
- Biotechnology
Background:
- Biological systems offer sustainable chemical synthesis, but metabolic engineering faces throughput limitations.
- Optimizing product titers, rates, and yields in cellular platforms is time-consuming.
- Current genetic tools and engineering techniques limit the speed of pathway design testing.
Purpose of the Study:
- To introduce cell-free protein synthesis as a rapid method for metabolic pathway prototyping.
- To accelerate the identification of optimal enzyme variants and concentrations for metabolite production.
- To provide a complementary strategy to enhance traditional cellular metabolic engineering.
Main Methods:
- Utilizing cell-free protein synthesis to generate diverse enzyme libraries.
- Reconstituting metabolic pathways in vitro using these enzyme libraries.
- Comparing hundreds to thousands of enzyme combinations and concentrations rapidly.
Main Results:
- Cell-free reactions enable pathway prototyping in days, significantly faster than cellular methods.
- Identification of productive pathway variants is accelerated through high-throughput screening.
- This approach facilitates the selection of promising candidates for in vivo testing or further in vitro characterization.
Conclusions:
- Cell-free pathway prototyping is a powerful strategy to accelerate metabolic engineering.
- This method significantly enhances the efficiency of developing biosynthesis platforms.
- It complements in vivo approaches, leading to faster development of metabolite-producing strains.
