Directed evolution of rRNA improves translation kinetics and recombinant protein yield.
Directed evolution of rRNA improves translation kinetics and recombinant protein yield.
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rRNA的定向进化提高了翻译动力学和重组蛋白产量。
DOI:
10.1038/s41467-021-25852-5
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发表时间:
2021-09-24
影响因子:
16.6
通讯作者:
Badran AH
中科院分区:
文献类型:
--
作者:
Liu F;Bratulić S;Costello A;Miettinen TP;Badran AH
In bacteria, ribosome kinetics are considered rate-limiting for protein synthesis and cell growth. Enhanced ribosome kinetics may augment bacterial growth and biomanufacturing through improvements to overall protein yield, but whether this can be achieved by ribosome-specific modifications remains unknown. Here, we evolve 16S ribosomal RNAs (rRNAs) from Escherichia coli, Pseudomonas aeruginosa, and Vibrio cholerae towards enhanced protein synthesis rates. We find that rRNA sequence origin significantly impacted evolutionary trajectory and generated rRNA mutants with augmented protein synthesis rates in both natural and engineered contexts, including the incorporation of noncanonical amino acids. Moreover, discovered consensus mutations can be ported onto phylogenetically divergent rRNAs, imparting improved translational activities. Finally, we show that increased translation rates in vivo coincide with only moderately reduced translational fidelity, but do not enhance bacterial population growth. Together, these findings provide a versatile platform for development of unnatural ribosomal functions in vivo. Ribosome kinetics are rate-limiting for protein synthesis. Here the authors evolve diverse 16S rRNAs for enhanced protein synthesis rates and genetic code expansion efficiencies in vivo.
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影响因子:
16.6
作者:
Badran AH;Liu DR
通讯作者:
Liu DR
DOI:
10.1073/pnas.96.5.1971
发表时间:
1999-03-02
影响因子:
11.1
作者:
Asai, T;Zaporojets, D;Squires, CL
通讯作者:
Squires, CL
影响因子:
48
作者:
Hubbard BP;Badran AH;Zuris JA;Guilinger JP;Davis KM;Chen L;Tsai SQ;Sander JD;Joung JK;Liu DR
通讯作者:
Liu DR
影响因子:
14.8
作者:
Carlson, Jacob C.;Badran, Ahmed H.;Guggiana-Nilo, Drago A.;Liu, David R.
通讯作者:
Liu, David R.
影响因子:
5.6
作者:
Bennett, NJ;Rakonjac, J
通讯作者:
Rakonjac, J