Fig. 5. EPR spectra of ⁶⁵Cu(ii) coordinated to (a) Aβ₁₆, (b) D7H, (c) D1E and (d) H6A–H13A at pH 7.5. Blue and red dashed lines indicate the signatures related to component I and component II, respectively. Aqueous solution of ⁶⁵Cu(ii) (0.45 mM), peptide (0.5 mM) with 10% of glycerol.