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Implicit ligand theory: rigorous binding free energies and thermodynamic expectations from molecular docking.


ABSTRACT: A rigorous formalism for estimating noncovalent binding free energies and thermodynamic expectations from calculations in which receptor configurations are sampled independently from the ligand is derived. Due to this separation, receptor configurations only need to be sampled once, facilitating the use of binding free energy calculations in virtual screening. Demonstrative calculations on a host-guest system yield good agreement with previous free energy calculations and isothermal titration calorimetry measurements. Implicit ligand theory provides guidance on how to improve existing molecular docking algorithms and insight into the concepts of induced fit and conformational selection in noncovalent macromolecular recognition.

SUBMITTER: Minh DD 

PROVIDER: S-EPMC3460968 | biostudies-other | 2012 Sep

REPOSITORIES: biostudies-other

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