Fig. 1: Schematic description of the system.

Schematic diagram describing (a) the NBD-functionalization of BSA in a CTAB-mediated condensate (liquid droplet) and (b) pH-responsive chemoselective protein NBD-functionalization in presence of ATP or ATP-hydrolyzed product AMP/Pi inside the droplet. Here, tyrosine (Y), cysteine (C) and lysine (K) can be functionalized via NBD-Cl. c Description of the symbols used for different constituents in this system.