| Literature DB >> 19398201 |
Charles E Melançon1, Peter G Schultz.
Abstract
We have developed a rapid, straightforward, one plasmid dual positive/negative selection system for the evolution of aminoacyl-tRNA synthetases with altered specificities in Escherichia coli. This system utilizes an amber stop codon containing chloramphenicol acetyltransferase/uracil phosphoribosyltransferase fusion gene. We demonstrate the utility of the system by identifying a variant of the Methanococcus jannaschii tyrosyl synthetase from a library of 10(9) variants that selectively incorporates para-iodophenylalanine in response to an amber stop codon.Entities:
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Year: 2009 PMID: 19398201 PMCID: PMC2714362 DOI: 10.1016/j.bmcl.2009.04.007
Source DB: PubMed Journal: Bioorg Med Chem Lett ISSN: 0960-894X Impact factor: 2.823