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. Author manuscript; available in PMC: 2013 Jun 14.
Published in final edited form as: J Phys Chem B. 2012 Apr 19;116(23):7006–7013. doi: 10.1021/jp3009699

Figure 2.

Figure 2

Atomic details of representative arginine clusters. A) N-Acylamino acid racemase (PDB entry 1r0m); B) ATP-dependent hexokinase (PDB entry 2e2q); C) Sm protein (PDB entry 1i8f); D) Nucleoside diphosphate kinase (PDB entry 2hur). The protein structures are represented with a ribbon model and colored by subunit. Interacting residues and water molecules are shown with a “balls and sticks” model. Hydrogen bonds are represented with cyan spheres and the Cζ-Cζ distances between arginine pairs are shown. Common stabilizing interactions such as planar stacking of arginines, counterions, and bridges of hydrogen bonds are shown.