Directed Evolution of Proteins through In Vitro Protein Synthesis in Liposomes

Directed evolution of proteins is a technique used to modify protein functions through “Darwinian selection.” In vitro compartmentalization (IVC) is an in vitro gene screening system for directed evolution of proteins. IVC establishes the link between genetic information (genotype) and the protein t...

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Main Authors: Takehiro Nishikawa, Takeshi Sunami, Tomoaki Matsuura, Tetsuya Yomo
Format: Article
Language:English
Published: Wiley 2012-01-01
Series:Journal of Nucleic Acids
Online Access:http://dx.doi.org/10.1155/2012/923214
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author Takehiro Nishikawa
Takeshi Sunami
Tomoaki Matsuura
Tetsuya Yomo
author_facet Takehiro Nishikawa
Takeshi Sunami
Tomoaki Matsuura
Tetsuya Yomo
author_sort Takehiro Nishikawa
collection DOAJ
description Directed evolution of proteins is a technique used to modify protein functions through “Darwinian selection.” In vitro compartmentalization (IVC) is an in vitro gene screening system for directed evolution of proteins. IVC establishes the link between genetic information (genotype) and the protein translated from the information (phenotype), which is essential for all directed evolution methods, by encapsulating both in a nonliving microcompartment. Herein, we introduce a new liposome-based IVC system consisting of a liposome, the protein synthesis using recombinant elements (PURE) system and a fluorescence-activated cell sorter (FACS) used as a microcompartment, in vitro protein synthesis system, and high-throughput screen, respectively. Liposome-based IVC is characterized by in vitro protein synthesis from a single copy of a gene in a cell-sized unilamellar liposome and quantitative functional evaluation of the synthesized proteins. Examples of liposome-based IVC for screening proteins such as GFP and β-glucuronidase are described. We discuss the future directions for this method and its applications.
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spelling doaj-art-7cb832e9474646afa4da12c1d7e58c012025-02-03T07:25:21ZengWileyJournal of Nucleic Acids2090-02012090-021X2012-01-01201210.1155/2012/923214923214Directed Evolution of Proteins through In Vitro Protein Synthesis in LiposomesTakehiro Nishikawa0Takeshi Sunami1Tomoaki Matsuura2Tetsuya Yomo3ERATO Japan Science and Technology (JST) and Yomo Dynamical Micro-Scale Reaction Environment Project, Graduate School of Information Sciences and Technology, Osaka University, 1-5 Yamadaoka, Suita, Osaka 565-0871, JapanERATO Japan Science and Technology (JST) and Yomo Dynamical Micro-Scale Reaction Environment Project, Graduate School of Information Sciences and Technology, Osaka University, 1-5 Yamadaoka, Suita, Osaka 565-0871, JapanERATO Japan Science and Technology (JST) and Yomo Dynamical Micro-Scale Reaction Environment Project, Graduate School of Information Sciences and Technology, Osaka University, 1-5 Yamadaoka, Suita, Osaka 565-0871, JapanERATO Japan Science and Technology (JST) and Yomo Dynamical Micro-Scale Reaction Environment Project, Graduate School of Information Sciences and Technology, Osaka University, 1-5 Yamadaoka, Suita, Osaka 565-0871, JapanDirected evolution of proteins is a technique used to modify protein functions through “Darwinian selection.” In vitro compartmentalization (IVC) is an in vitro gene screening system for directed evolution of proteins. IVC establishes the link between genetic information (genotype) and the protein translated from the information (phenotype), which is essential for all directed evolution methods, by encapsulating both in a nonliving microcompartment. Herein, we introduce a new liposome-based IVC system consisting of a liposome, the protein synthesis using recombinant elements (PURE) system and a fluorescence-activated cell sorter (FACS) used as a microcompartment, in vitro protein synthesis system, and high-throughput screen, respectively. Liposome-based IVC is characterized by in vitro protein synthesis from a single copy of a gene in a cell-sized unilamellar liposome and quantitative functional evaluation of the synthesized proteins. Examples of liposome-based IVC for screening proteins such as GFP and β-glucuronidase are described. We discuss the future directions for this method and its applications.http://dx.doi.org/10.1155/2012/923214
spellingShingle Takehiro Nishikawa
Takeshi Sunami
Tomoaki Matsuura
Tetsuya Yomo
Directed Evolution of Proteins through In Vitro Protein Synthesis in Liposomes
Journal of Nucleic Acids
title Directed Evolution of Proteins through In Vitro Protein Synthesis in Liposomes
title_full Directed Evolution of Proteins through In Vitro Protein Synthesis in Liposomes
title_fullStr Directed Evolution of Proteins through In Vitro Protein Synthesis in Liposomes
title_full_unstemmed Directed Evolution of Proteins through In Vitro Protein Synthesis in Liposomes
title_short Directed Evolution of Proteins through In Vitro Protein Synthesis in Liposomes
title_sort directed evolution of proteins through in vitro protein synthesis in liposomes
url http://dx.doi.org/10.1155/2012/923214
work_keys_str_mv AT takehironishikawa directedevolutionofproteinsthroughinvitroproteinsynthesisinliposomes
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AT tomoakimatsuura directedevolutionofproteinsthroughinvitroproteinsynthesisinliposomes
AT tetsuyayomo directedevolutionofproteinsthroughinvitroproteinsynthesisinliposomes