Figure 1.

The 298K CD spectra of (A) apoCytC3 (black), apoCytC3/Cl- + 2 equiv FeII (green) and CytC3/FeII/Cl-/α-KG (blue) and (C) CytC3/FeII/Cl-/α-KG/L-Aba-S-CytC2. The low-temperature, 7T MCD spectra of (B) CytC3/FeII/Cl-/α-KG and (D) CytC3/FeII/Cl-/α-KG /L-Aba-S-CytC2. VTVH data (symbols) and their best fit (lines) for (E) CytC3/FeII/Cl-/α-KG collected at 7505 cm-1 and (F) CytC3/FeII/Cl-/α-KG /L-Aba-S-CytC2 collected at 7225 cm-1.