Figure 4
Contour maps of the Fourier electron density for (x3, x4) cross-sections through the Zn5 and Zn6 atomic domains. Top: the contours generated from the structure solution for the (a) Zn5 and (b) Zn6 sites show positionally modulated and discontinuous atomic domains. Bottom: the corresponding electron density maps for the refined model, in which atomic modulation functions with crenel functions are used for the (c) Zn5 and (d) Zn6 sites. The model positions for Zn5 and Zn6 are shown in gray and blue, respectively. |