Skip to main content
. Author manuscript; available in PMC: 2011 Mar 9.
Published in final edited form as: J Chem Theory Comput. 2010 Mar 9;6(3):607–624. doi: 10.1021/ct900460m

Table 2.

Comparison of explicit TIP3P ΔGpol for deca-alanine with 3D-RISM-KH, Poisson Equation (PE) and generalized Born (GB). Conformations are as in Roe et al.61 (alpha:α-helix, PP2:polyproline II, left:left-hand helix and hairpin:β-hairpin). Units are kcal/mol and errors are one standard deviation from the mean.

TIP3Pa 3D-RISMb PEa GBHCTa GBOBCa GBNecka

cTIP3P PR-TIP3P
(a) ΔGpol

alpha -44.08±0.04 -44.91±1.27 -55.79±0.93 -47.97±0.77 -51.69±1.21 -49.38±1.21 -43.26±0.90
PP2 -76.39±0.15 -76.82±1.31 -93.60±1.07 -78.05±0.91 -77.35±1.05 -78.07±1.09 -77.59±1.02
left -51.30±0.12 -51.60±1.22 -61.81±1.03 -54.85±0.90 -55.05±1.08 -52.67±1.10 -48.19±0.91
hairpin -54.16±0.25 -56.00±1.17 -69.36±1.31 -57.28±1.13 -57.48±1.45 -56.03±1.47 -52.85±1.29

(b) ΔΔGpol

PP2-alpha -32.31 -31.91 -37.81 -30.07 -25.67 -28.69 -34.33
PP2-left -25.09 -25.22 -31.79 -23.19 -22.31 -25.40 -29.40
PP2-hairpin -22.23 -20.82 -24.24 -20.77 -19.87 -22.03 -24.73
alpha-left 7.22 6.69 6.02 6.88 3.36 3.29 4.93
alpha-hairpin 10.08 11.09 13.57 9.31 5.80 6.66 9.60
left-hairpin 2.86 4.40 7.55 2.43 2.43 3.37 4.67

(c) ΔΔGpol Root-Mean-Square Deviations

overall 0.99 4.37 1.39 3.89 2.60 2.51
PP2 0.85 5.14 1.89 4.37 2.10 3.11
non-PP2 1.11 3.45 0.55 3.34 3.02 1.71
hairpin 1.34 3.57 1.53 2.83 2.00 1.80
non-hairpin 0.39 5.05 1.58 4.72 3.09 3.05
a

From Roe et al.61

b

This work.