Extensive breaking of genetic code degeneracy with non-canonical amino acids.
Extensive breaking of genetic code degeneracy with non-canonical amino acids.
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DOI:
10.1038/s41467-023-40529-x
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发表时间:
2023-08-17
影响因子:
16.6
通讯作者:
Hartman, Matthew C. T.
中科院分区:
文献类型:
--
作者:
McFeely, Clinton A. L.;Shakya, Bipasana;Makovsky, Chelsea A.;Haney, Aidan K.;Cropp, T. Ashton;Hartman, Matthew C. T.
Genetic code expansion (GCE) offers many exciting opportunities for the creation of synthetic organisms and for drug discovery methods that utilize in vitro translation. One type of GCE, sense codon reassignment (SCR), focuses on breaking the degeneracy of the 61 sense codons which encode for only 20 amino acids. SCR has great potential for genetic code expansion, but extensive SCR is limited by the post-transcriptional modifications on tRNAs and wobble reading of these tRNAs by the ribosome. To better understand codon-tRNA pairing, here we develop an assay to evaluate the ability of aminoacyl-tRNAs to compete with each other for a given codon. We then show that hyperaccurate ribosome mutants demonstrate reduced wobble reading, and when paired with unmodified tRNAs lead to extensive and predictable SCR. Together, we encode seven distinct amino acids across nine codons spanning just two codon boxes, thereby demonstrating that the genetic code hosts far more re-assignable space than previously expected, opening the door to extensive genetic code engineering. Genetic code expansion is limited by the degeneracy of the 61 sense codons which encode for only 20 amino acids. Here, the authors show that by combining hyperaccurate ribosomes and in vitro transcribed tRNAs, dramatic and extensive breaking of sense codon degeneracy can be achieved.
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DOI:
10.1002/cbic.202100299
发表时间:
2022-01-05
期刊:
Chembiochem : a European journal of chemical biology
影响因子:
--
作者:
通讯作者:
--
DOI:
10.1261/rna.040030.113
发表时间:
2013-12
期刊:
RNA (New York, N.Y.)
影响因子:
--
作者:
Demirci H;Wang L;Murphy FV 4th;Murphy EL;Carr JF;Blanchard SC;Jogl G;Dahlberg AE;Gregory ST
通讯作者:
Gregory ST
影响因子:
14.9
作者:
Boccaletto P;Stefaniak F;Ray A;Cappannini A;Mukherjee S;Purta E;Kurkowska M;Shirvanizadeh N;Destefanis E;Groza P;Avşar G;Romitelli A;Pir P;Dassi E;Conticello SG;Aguilo F;Bujnicki JM
通讯作者:
Bujnicki JM
影响因子:
14.9
作者:
Cui Z;Wu Y;Mureev S;Alexandrov K
通讯作者:
Alexandrov K
DOI:
10.1073/pnas.0509219103
发表时间:
2006-03-21
影响因子:
11.1
作者:
Hartman, MCT;Josephson, K;Szostak, JW
通讯作者:
Szostak, JW