title: A multiscale coarse-grained polarizable solvent model for handling long tail bulk electrostatics.
abstract: A multiscale coarse-grained approach able to handle efficiently the solvation of microscopic solutes in extended chemical environment is described. That approach is able to compute readily and efficiently very long-range solute/solvent electrostatic microscopic interactions, up to the 1-μm scale, by considering a reduced amount of computational resources. All the required parameters are assigned to reproduce available data concerning the solvation of single ions. Such a strategy makes it possible to reproduce with good accuracy the solvation properties concerning simple ion pairs in solution (in particular, the asymptotic behavior of the ion pair potentials of mean force). This new method represents an extension of the polarizable pseudoparticle solvent model, which has been recently improved to account for the main features of hydrophobic effects in liquid water (Masella et al., J. Comput. Chem. 2011, 32, 2664). This multiscale approach is well suited to be used for computing the impact of charge changes in free energy computations, in terms of both accuracy and efficiency.
authors: Laboratoire de Chimie du Vivant, Service d'ingénierie moléculaire des protéines, Institut de biologie et de technologies de Saclay, Commissariat à l'énergie atomique, Centre de Saclay, 91191 Gif-sur-Yvette Cedex, France. michel.masella@cea.fr
authors: Michel
authors: M
authors: Masella
authors: Daniel
authors: D
authors: Borgis
authors: Philippe
authors: P
authors: Cuniasse
mesh_terms: D008958:Models, Molecular; D056004:Molecular Dynamics Simulation; D011506:Proteins / Q000737:chemistry*; D012997:Solvents / Q000737:chemistry; D055672:Static Electricity; D014867:Water / Q000737:chemistry*
chemical_list: D011506:Proteins; D012997:Solvents; D014867:Water