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Figure 9
Strategies and redundancies for a monoclinic crystal. Simulation parameters are as for Fig. 4[link], except that the limit resolution is set to 1.22 Å, giving a maximum reflection angle 2θ of 24.2°. (a)–(d) Orthogonal views of the 14% lowest redundancy reflections for a basic strategy (a, b) and an advanced strategy (cd). The strategies are: basic, 360° in one sweep at κ = 0°; advanced, 936° total with one 360° sweep at κ = 0° and three sweeps of 192° each with κ = 180°. Going from a basic to an advanced strategy increases the lowest redundancy from 25% to∼75%, due to averaging over multiple orientations. Note the concentric rings arising from reflections lost in the module gaps, and the trumpet-shaped images of the cusps. (e) Fraction of reflections per redundancy bin for a basic and advanced strategy simulation. The redundancy distribution is much more uniform for the advanced strategy. As the advanced strategy length is not an integer multiple of 180° the maximum redundancy has been set to 936°/360° times the maximum redundancy (8) for the basic strategy. This explains the value of slightly above 100% for the highest redundancy bin.

Journal logoSTRUCTURAL
BIOLOGY
ISSN: 2059-7983
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