Engineered aminoacyl-tRNA synthetase (aaRS) mutants have been developed that facilitate ultrafast bioorthogonal noncanonical amino acid tagging (BONCAT) of newly synthesized proteins in diverse bacteria, including ESKAPE pathogens. The substrate polyspecificity of the aaRS mutants enables pulse-chase BONCAT and differential tagging of temporally distinct nascent proteomes in cells.
- Conor Loynd
- Soumya Jyoti Singha Roy
- Abhishek Chatterjee