The genetic code of all three kingdoms of life is universal and encodes the same 20 natural amino acids for a variety of complex physiological functions. The expansion of the genetic code by incorporating universal amino acids (UAAs) with diverse functional groups has enabled the synthesis of proteins with enhanced or novel functions, and the construction of UAA-dependent synthetic auxotrophs.
Click here for original story, Team engineers directed-evolution of translation system for efficient unnatural amino acids incorporation
Source: Phys.org