Fig. 4: Specific ascorbate recognition mechanism of HT-STAM-17-OEt.

a ITC curves of HT-STAM-17-OEt binding to ascorbate and lactate. b Optimized geometric structure for ascorbate and lactate adsorption. c The specific capture of sweat ascorbate by Trp/His on the STAM-17-OEt surface.