Mutually orthogonal aminoacyl transfer RNA synthetase/transfer RNA pairs are required for genetically encoding non-canonical amino acids into proteins, as well as for the encoded cellular synthesis of polymers and macrocycles; however, the scalable discovery of such pairs is challenging. A quintuply orthogonal set of pyrrolysyl-tRNA synthetase/pyrrolysyl-tRNA pairs has now been generated through tRNA screening, engineering and directed evolution.
- Adam T. Beattie
- Daniel L. Dunkelmann
- Jason W. Chin