Current electrochemical-based protein labelling methods suffer from limited site-selectivity and off-target reactivity owing to required radical/electrophilic reagents. Now an electrochemical strategy enables chemoselective labelling of proteins at a site-specifically incorporated 5-hydroxytryptophan residue using aromatic amines as coupling partners. This approach works on various proteins, including a full-length antibody, and is compatible with established click reactions.
- Conor Loynd
- Soumya Jyoti Singha Roy
- Abhishek Chatterjee
