Engineered ribosomes with tethered subunits for expanding biological function.
Journal
Nature communications
ISSN: 2041-1723
Titre abrégé: Nat Commun
Pays: England
ID NLM: 101528555
Informations de publication
Date de publication:
02 09 2019
02 09 2019
Historique:
received:
15
11
2018
accepted:
10
07
2019
entrez:
4
9
2019
pubmed:
4
9
2019
medline:
31
12
2019
Statut:
epublish
Résumé
Ribo-T is a ribosome with covalently tethered subunits where core 16S and 23S ribosomal RNAs form a single chimeric molecule. Ribo-T makes possible a functionally orthogonal ribosome-mRNA system in cells. Unfortunately, use of Ribo-T has been limited because of low activity of its original version. Here, to overcome this limitation, we use an evolutionary approach to select new tether designs that are capable of supporting faster cell growth and increased protein expression. Further, we evolve new orthogonal Ribo-T/mRNA pairs that function in parallel with, but independent of, natural ribosomes and mRNAs, increasing the efficiency of orthogonal protein expression. The Ribo-T with optimized designs is able to synthesize a diverse set of proteins, and can also incorporate multiple non-canonical amino acids into synthesized polypeptides. The enhanced Ribo-T designs should be useful for exploring poorly understood functions of the ribosome and engineering ribosomes with altered catalytic properties.
Identifiants
pubmed: 31477696
doi: 10.1038/s41467-019-11427-y
pii: 10.1038/s41467-019-11427-y
pmc: PMC6718428
doi:
Substances chimiques
Amino Acids
0
Peptides
0
RNA, Messenger
0
RNA, Ribosomal, 16S
0
RNA, Ribosomal, 23S
0
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.
Langues
eng
Sous-ensembles de citation
IM
Pagination
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