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Genetic Code Expansion in the Engineered Organism Vmax X2: High Yield and Exceptional Fidelity

[Image: see text] We report that the recently introduced commercial strain of Vibrio natriegens (Vmax X2) supports robust unnatural amino acid mutagenesis, generating exceptional yields of soluble protein containing up to 5 noncanonical α-amino acids (ncAA). The isolated yields of ncAA-containing su...

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Autores principales: González, Sebasthian Santiago, Ad, Omer, Shah, Bhavana, Zhang, Zhongqi, Zhang, Xizi, Chatterjee, Abhishek, Schepartz, Alanna
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2021
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8461772/
https://www.ncbi.nlm.nih.gov/pubmed/34584951
http://dx.doi.org/10.1021/acscentsci.1c00499
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author González, Sebasthian Santiago
Ad, Omer
Shah, Bhavana
Zhang, Zhongqi
Zhang, Xizi
Chatterjee, Abhishek
Schepartz, Alanna
author_facet González, Sebasthian Santiago
Ad, Omer
Shah, Bhavana
Zhang, Zhongqi
Zhang, Xizi
Chatterjee, Abhishek
Schepartz, Alanna
author_sort González, Sebasthian Santiago
collection PubMed
description [Image: see text] We report that the recently introduced commercial strain of Vibrio natriegens (Vmax X2) supports robust unnatural amino acid mutagenesis, generating exceptional yields of soluble protein containing up to 5 noncanonical α-amino acids (ncAA). The isolated yields of ncAA-containing superfolder green fluorescent protein (sfGFP) expressed in Vmax X2 are up to 25-fold higher than those achieved using commercial expression strains (Top10 and BL21) and more than 10-fold higher than those achieved using two different genomically recodedEscherichia colistrains that lack endogenous UAG stop codons and release factor 1 and have been optimized for improved fitness and preferred growth temperature (C321.ΔA.opt and C321.ΔA.exp). In addition to higher yields of soluble protein, Vmax X2 cells also generate proteins with significantly lower levels of misincorporated natural α-amino acids at the UAG-programmed position, especially in cases where the ncAA is a moderate substrate for the chosen orthogonal aminoacyl tRNA synthetase (aaRS). This increase in fidelity implies that the use of Vmax X2 cells as the expression host can obviate the need for time-consuming directed evolution experiments to improve the selectivity of an aaRS toward highly desired but suboptimal ncAA substrates.
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spelling pubmed-84617722021-09-27 Genetic Code Expansion in the Engineered Organism Vmax X2: High Yield and Exceptional Fidelity González, Sebasthian Santiago Ad, Omer Shah, Bhavana Zhang, Zhongqi Zhang, Xizi Chatterjee, Abhishek Schepartz, Alanna ACS Cent Sci [Image: see text] We report that the recently introduced commercial strain of Vibrio natriegens (Vmax X2) supports robust unnatural amino acid mutagenesis, generating exceptional yields of soluble protein containing up to 5 noncanonical α-amino acids (ncAA). The isolated yields of ncAA-containing superfolder green fluorescent protein (sfGFP) expressed in Vmax X2 are up to 25-fold higher than those achieved using commercial expression strains (Top10 and BL21) and more than 10-fold higher than those achieved using two different genomically recodedEscherichia colistrains that lack endogenous UAG stop codons and release factor 1 and have been optimized for improved fitness and preferred growth temperature (C321.ΔA.opt and C321.ΔA.exp). In addition to higher yields of soluble protein, Vmax X2 cells also generate proteins with significantly lower levels of misincorporated natural α-amino acids at the UAG-programmed position, especially in cases where the ncAA is a moderate substrate for the chosen orthogonal aminoacyl tRNA synthetase (aaRS). This increase in fidelity implies that the use of Vmax X2 cells as the expression host can obviate the need for time-consuming directed evolution experiments to improve the selectivity of an aaRS toward highly desired but suboptimal ncAA substrates. American Chemical Society 2021-08-31 2021-09-22 /pmc/articles/PMC8461772/ /pubmed/34584951 http://dx.doi.org/10.1021/acscentsci.1c00499 Text en © 2021 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by-nc-nd/4.0/Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle González, Sebasthian Santiago
Ad, Omer
Shah, Bhavana
Zhang, Zhongqi
Zhang, Xizi
Chatterjee, Abhishek
Schepartz, Alanna
Genetic Code Expansion in the Engineered Organism Vmax X2: High Yield and Exceptional Fidelity
title Genetic Code Expansion in the Engineered Organism Vmax X2: High Yield and Exceptional Fidelity
title_full Genetic Code Expansion in the Engineered Organism Vmax X2: High Yield and Exceptional Fidelity
title_fullStr Genetic Code Expansion in the Engineered Organism Vmax X2: High Yield and Exceptional Fidelity
title_full_unstemmed Genetic Code Expansion in the Engineered Organism Vmax X2: High Yield and Exceptional Fidelity
title_short Genetic Code Expansion in the Engineered Organism Vmax X2: High Yield and Exceptional Fidelity
title_sort genetic code expansion in the engineered organism vmax x2: high yield and exceptional fidelity
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8461772/
https://www.ncbi.nlm.nih.gov/pubmed/34584951
http://dx.doi.org/10.1021/acscentsci.1c00499
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