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Figure 5
Self-rotation sections for different κ values calculated using MOLREP. (a) κ = 180° sections for insulin data in space group P321. The crystallographic threefold axes are the maximum. The second peak on the κ = 180° section marked in red is generated by a noncrystallographic twofold axes of symmetry. The interaction of crystallographic and noncrystallographic symmetry generates many additional features. (b) κ = 180° sections for S100 data in space group H32. The noncrystallographic twofold axis of symmetry is marked in red. It is not a well defined peak and is distorted by its interaction with the crystallographic symmetry.

Journal logoBIOLOGICAL
CRYSTALLOGRAPHY
ISSN: 1399-0047
Volume 64| Part 1| December 2008| Pages 17-24
doi:10.1107/S0907444907049736
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