Figure 2 - full size

Figure 2.
Difference Fourier map calculated in the structures of LPO·SCN^–·CN^– for SCN^– and CN^– ions. The electron density from the difference Fourier map with 2σ cutoff on the left and 9σ cutoff on the right. The rod-like density for the CN^– ion is also observed at the distal heme side.