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. Author manuscript; available in PMC: 2013 Nov 7.
Published in final edited form as: J Am Chem Soc. 2012 Oct 24;134(44):18330–18337. doi: 10.1021/ja306946q

Figure 1.

Figure 1

CW-EPR spectra of Cu2+-Aβ complexes. (A) Soluble Cu2+-Aβ(1-16), experiment and simulation (dashed line), (B) Fibrillar Cu2+-Aβ(1-40), experiment and simulation (dashed line), (C) 13C,15N-His13-Cu2+-Aβ(1-40), (D) 13C,15N-His14-Cu2+-Aβ(1-40). Acquisition parameters: microwave frequency = 9.45 GHz; microwave power = 2 mW; modulation amplitude = 1 mT; modulation frequency = 100 kHz; time constant = 10.24 ms; conversion time = 81.92 ms; T = 120 K. Spectra A and B are an average of 10 scans, and spectra C and D are an average of 25 scans. Simulation parameters for spectra A and B are presented in Table 1.