Versatility of Synthetic tRNAs in Genetic Code Expansion.

Abstract:

:Transfer RNA (tRNA) is a dynamic molecule used by all forms of life as a key component of the translation apparatus. Each tRNA is highly processed, structured, and modified, to accurately deliver amino acids to the ribosome for protein synthesis. The tRNA molecule is a critical component in synthetic biology methods for the synthesis of proteins designed to contain non-canonical amino acids (ncAAs). The multiple interactions and maturation requirements of a tRNA pose engineering challenges, but also offer tunable features. Major advances in the field of genetic code expansion have repeatedly demonstrated the central importance of suppressor tRNAs for efficient incorporation of ncAAs. Here we review the current status of two fundamentally different translation systems (TSs), selenocysteine (Sec)- and pyrrolysine (Pyl)-TSs. Idiosyncratic requirements of each of these TSs mandate how their tRNAs are adapted and dictate the techniques used to select or identify the best synthetic variants.

journal_name

Genes (Basel)

journal_title

Genes

authors

Hoffman KS,Crnković A,Söll D

doi

10.3390/genes9110537

subject

Has Abstract

pub_date

2018-11-07 00:00:00

issue

11

issn

2073-4425

pii

genes9110537

journal_volume

9

pub_type

杂志文章,评审

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