Electrostatic Potential Contours about Rabbit LDH. (A) I = 0.01 M. (B) I = 0.05 M. (C) I = 0.1 M. (D) I = 0.15 M. In all cases, the contour levels are 0.3 kcal/mol apart. Red (−1 kcal/mol), Magenta (−0.71 kcal/mol), Purple (−0.43 kcal/mol), Dark red (−0.14 kcal/mol), Blue (0.2 kcal/mol), Cyan (0.5 kcal/mol), Navy blue (0.8 kcal/mol), Dark cyan (1.1 kcal/mol), Royal blue (1.4 kcal/mol), Violet (1.7 kcal/mol), Black (2–3 kcal/mol).