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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.

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