Genetic code expansion of a eukaryotic in vitro translation system

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The genetic code programs biosynthesis of polypeptides with efficiency vastly superior to chemical engineering. As the chemical diversity of natural amino acids in proteins is limited, finding ways to include “unnatural” amino acids can supercharge biology with a range of new protein activities. While the genetic code can be expanded to make space for unnatural amino acids, the rarity of free codons and reliance on prokaryotic organisms limit the applicability of this approach. We will develop a new higher-organism cell-free protein production system that can incorporate multiple unnatural amino acids into defined points of proteins. This, enabling and broadly applicable technology, will be tested by constructing opioid biosensors.