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Two-dimensional relative free energy surfaces for ϕ(CNCαC) versus ψ(NCαCN) dihedrals, given in degrees, calculated from HREX simulations for all the model glycopeptide systems. The various significant regions of the ϕ/ψ plot have been labeled. Relative free energies are calculated from the natural logarithm of the relative probability and are given in kcal/mol.
