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. Author manuscript; available in PMC: 2012 Oct 1.
Published in final edited form as: Chem Phys Lett. 2011 Oct;514(4-6):368–373. doi: 10.1016/j.cplett.2011.08.067

Table 2.

Convergence and uncertainty of atomic polarization charges (e) for salt-bridging amino acid side chain dimers RD and KD. σ and rmsd are, respectively, the average standard deviations of atomic polarization charges and the average root mean squared deviations of atomic polarization charges from those computed with the finest tested grid spacing.

1/h σ (×10-3) rmsd (×10-3)

RD 2 2.74 2.28
4 1.02 1.45
8 .379 .659
16 .142 NA

KD 2 3.30 1.69
4 1.20 .794
8 .473 .501
16 .168 NA