TABLE 4

Computational simulation results: Binding free energy and its components by prime MM-GBSA calculation

All energy values are in kcal/mol and median score from trajectory of MD simulation.

ReceptorΔGbindΔGCoulΔGH-bondΔGCovΔGvdWΔGLipoΔGPackingΔGSolv GB
hOX1R−55.100−11.715−0.6260.215−43.335−19.237−3.00223.774
hOX2R−58.173−12.254−0.5770.372−44.357−21.723−2.89222.676
  • ΔGbind, lemborexant receptor binding free energies; ΔGCoul, the Coulomb binding free energy; ΔGCov, the covalent binding free energy; ΔGH-bond, the hydrogen bonding free energy; ΔGLipo, the lipophilic binding free energy; ΔGPacking, the π-π packing free energy; ΔGSolv GB, the generalized Born solvation binding free energy; ΔGvdW, the van der Waals binding free energy.