Figure 1. Fluorescence emission spectra of S100A12 (5 µM) a) in aqueous solution (black) and incubated with Ca²⁺ (red), Zn²⁺ (blue), both ions together (green), DPPC vesicles (dot grey), DPPG (dash grey) vesicles. b) in the presence of DPPC liposomes (black) and c) DPPG liposomes (black), in both cases with Ca²⁺ (red), Zn²⁺ (blue), or Ca²⁺/Zn²⁺ together (green).