Abstract:
:The genetic encoding of synthetic or "non-natural" amino acids promises to diversify the functions and structures of proteins. We applied rapid codon-reassignment for creating Escherichia coli strains unable to terminate translation at the UAG "stop" triplet, but efficiently decoding it as various tyrosine and lysine derivatives. This complete change in the UAG meaning enabled protein synthesis with these non-natural molecules at multiple defined sites, in addition to the 20 canonical amino acids. UAG was also redefined in the E. coli BL21 strain, suitable for the large-scale production of recombinant proteins, and its cell extract served the cell-free synthesis of an epigenetic protein, histone H4, fully acetylated at four specific lysine sites.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Mukai T,Yanagisawa T,Ohtake K,Wakamori M,Adachi J,Hino N,Sato A,Kobayashi T,Hayashi A,Shirouzu M,Umehara T,Yokoyama S,Sakamoto Kdoi
10.1016/j.bbrc.2011.07.020subject
Has Abstractpub_date
2011-08-12 00:00:00pages
757-61issue
4eissn
0006-291Xissn
1090-2104pii
S0006-291X(11)01239-3journal_volume
411pub_type
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