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Table 2 Binding free energy comparison between the experimental and LIE (Glide/Prime) or LIE (Affinity/SA) values for compounds 1 through 6

From: Binding mode prediction of conformationally restricted anandamide analogs within the CB1 receptor

 

ΔG bind(kcal/mol)

Compound

LIE ( Glide/Prime )

LIE ( Affinity/SA )

Experimental

1

-9.6

-10.1

-10.1

2

-9.9

-9.9

-9.9

3

-9.8

-8.7

-8.9

4

-8.8

-8.7

-8.8

5

-7.5

-8.9

-8.8

6

-7.9

-7.3

-7.2

  1. The Glide/Prime LIE fit was determined using the following equation with a RMSD of 0.6 kcal/mol: ΔG bind = 0.381<ΔUvdw> + 0.028<ΔUelec> + 1.271ΔSASA. The Affinity/SA LIE fit was determined using the following equation with a RMSD of 0.1 kcal/mol: ΔG bind = 0.348<ΔUvdw> + 0.032<ΔUelec> + 1.084ΔSASA. The Experimental ΔG bind values were calculated from the experimental K i values (see Table 1) assumed to be equivalent to K D, using ΔG bind = RT ln K i for T = 298 K.