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Figure 5
Backbone hydrogen bonds stabilizing the dimer–dimer interaction. Four out of the eight contacts are indicated with a dashed line (distances given in Å). The other four hydrogen bonds are the equivalent companions on the reverse side of the protein and are not visible in the picture.

IUCrJ
Volume 1| Part 6| October 2014| Pages 429-438
ISSN: 2052-2525
doi:10.1107/S2052252514021113