Figure 2.
CD and visible absorption spectra of ScoSl and the H176A mutant. (a) Far-UV CD spectra of apo-oxidized (disulphide), apo-reduced (free-thiol) and Cu(II)-loaded ScoSl. (b) Visible absorbance spectra of Cu(II)-loaded ScoSl and the H176A mutant. All spectra were recorded at 20°C, with protein concentrations ranging between 20 and 100 μM.