Chapter title |
Cell-Free Protein Synthesis for Multiple Site-Specific Incorporation of Noncanonical Amino Acids Using Cell Extracts from RF-1 Deletion E. coli Strains
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Chapter number | 3 |
Book title |
Noncanonical Amino Acids
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Published in |
Methods in molecular biology, January 2018
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DOI | 10.1007/978-1-4939-7574-7_3 |
Pubmed ID | |
Book ISBNs |
978-1-4939-7573-0, 978-1-4939-7574-7
|
Authors |
Eiko Seki, Tatsuo Yanagisawa, Shigeyuki Yokoyama |
Abstract |
Cell-free protein synthesis (CFPS) is an effective method for the site-specific incorporations of noncanonical amino acids (ncAAs) into proteins. The nature of in vitro synthesis enables the use of experimental conditions that are toxic or reduce cellular uptake during in vivo site-specific incorporations of ncAAs. Using the Escherichia coli cell extract (S30) from the highly reproductive RF-1 deletion strains, B-60.∆A::Z and B-95.∆A, with orthogonal tRNA and aminoacyl-tRNA synthetase (aaRS) pairs from Methanosarcina mazei, we have developed CFPS methods for the highly productive and efficient multiple incorporation of ncAAs. In this chapter, we describe our methods for the preparation of the S30 and the orthogonal tRNAPyl and PylRS pair, and two CFPS protocols for ncAA incorporation. |
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