Figure 2 - full size

Figure 2.
Figure 2. Magnesium ion, in white, is coordinated by Thr 550, three water molecules (one of which is coordinated by Asp 603), and [222]beta - and [223]gamma -phosphate oxygens. Prepared using gl-render, Bobscript^[224]42, and rendered using POV-ray^[225]43. a, Stereoview of experimental electron density map using MAD phases. b, Stereoview of phase-combined 2F[o]-F[c] *sgr;[A]-weighted electron density maps using MAD and model phases of the refined model.