Dependence of log(ARam) on gz for pyrrolate–imine copper(II) complexes 1–8 in 2:1 toluene/chloroform solution (◊); Cu-S100A12 (◁), Cu/Ca-S100B (◆), and Cu-S100B (×) in buffer/glycerol; prion peptide HGGGW (★) and prion protein (23-28, 57-91) (◀) in buffer/glycerol; CuEDTA (✶), and Cu(aq)2+ (●) in 1:1 water/glycerol; Cu(OH)42− (■) in 3 M NaOH solution; CuIm4 (▲) and CuMeIm4 (▶) in 1:1 water/ethylene glycol; Cu(dtc)2 in Ni(dtc)2 (▷), CuTTP (✰), ZnTTPbipy-Cu(hfac)2 (✚) in 2:1 toluene/chloroform.