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. 2021 Aug 12;8:713003. doi: 10.3389/fmolb.2021.713003

TABLE 2.

Summary of free energy calculations with the PDBePISA utility (Krissinel and Henrick, 2007). ΔG s, ΔG values in kcal/mol.

Configuration Contact ΔG s Hydrogen Salt ΔG
Area (nm2) Solvation Bonds Bridges (Total)
Experimental 8.43 −4.5 14 1 −10.81
rigid shift/apta2 6.22 0.0 5 1 −2.35
docking/apta1 7.64 −2.2 4 1 −6.41
docking/DNA 3.57 −5.0 −5.00
docking/apta2 5.92 −7.2 2 4 −8.68