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. 2014 Oct 2;10(10):e1004611. doi: 10.1371/journal.pgen.1004611

Figure 6. The thermodynamic cycle for the calculation of the intrinsic binding contribution of a protein-protein interfacial residue.

Figure 6

An idealized dummy residue was employed as the reference to evaluate the intrinsic contribution of a target residue (for instance Arg) to the binding strength of the two interacting proteins. The intrinsic binding contribution (IBC) of this Arg residue is defined as Inline graphic. To evaluate the IBC, two alchemical calculations are performed respectively to calculate Inline graphic and Inline graphic.