Current photoproximity labelling methods often require metal-based catalysts to map protein interactomes but, owing to their toxicity, they have limited intracellular applicability. A deazaflavin cofactor has now been developed as a biocompatible alternative for diazirine activation inside living cells, offering accurate mapping of protein interactors and dynamics with excellent spatio-temporal control.
- Leander B. Crocker
- Jan Vincent V. Arafiles
- Christian P. R. Hackenberger