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Figure 4
Illustrations for the crystal structures of 1a and 2a: packing diagrams for (a) 1a and (c) 2a; β-sheets in (b) 1a and (d) 2a. Notice the difference in alignment of molecules within the β-sheet between 1a and 2a.

IUCrJ
Volume 2| Part 5| September 2015| Pages 523-533
ISSN: 2052-2525