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Figure 3
Two water-mediated ion pairs between aspartate and arginine residues (Asp156 Oδ1 A–HOH391 O–Arg121 NH2 B and Asp156 Oδ1 B–HOH391 O–Arg121 NH2 A) of different subunits in PDB entry 1onx. (a) Displayed without σs and (b) displayed with σs and an appropriate number of decimal places.

IUCrJ
Volume 1| Part 1| January 2014| Pages 74-81
ISSN: 2052-2525
https://doi.org/10.1107/S2052252513031485