!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ! ! Implicit Solvation ! ! Implicit Solvation contains numerical implicit solvation ! treatments of biomolecules for both electrostatic and ! nonelectrostatic interactions. ! ! The electrostatic interaction is modeled by the linearized ! Poisson-Boltzmann equation. The implementation (module ! poisson_boltzmann) uses the finite difference method and the ! particle-particle particle-mesh strategy to compute the total ! electrostatic energy and forces for molecular mechanics and ! dynamics simulations. See J. Chem. Phys. 119:11035-11047, 2003 ! and J. Comp. Chem. 23:1244-1253, 2002 for implementation details. ! See Tan, Yang and Luo, In Preparation for the parameters used. ! Portions of the code are modified from the UHBD program (Comp. ! Phys. Comm. 91:57-95, 1995). See code documentation for more ! information. ! ! The nonelectrostatic interaction is modeled by two separate ! terms: dispersion and cavity (hydrophobic), in this implementation ! (module dispersion_cavity). The dispersion term is computed by a ! numerical integration over the solvent accessible surface area. ! The cavity term is modeled by a term proportional to the solvent ! accessible surface area and with a single proportional constant. ! See Tan and Luo, In Preparation for implementation detail and ! parameters used. ! ! Both implementations requires a numerical solvent accessible surface ! area calculation, as implemented in module solvent_accessibility. See ! Luo, In Preparation for implementation detail. ! ! Ray Luo (rluo@uci.edu) ! Department of Molecular Biology and Biochemistry ! University of California, Irvine ! ! Additional contributing authors are listed in the code ! documentation. ! ! Copyright (c) 2004-2006. The Regents of the University of ! California. Portions Copyright (c) 1989-2006. University of ! Houston. ! ! This file is part of Implicit Solvation. ! ! Implicit Solvation is free software; you can redistribute it ! and/or modify it under the terms of the GNU General Public License ! as published by the Free Software Foundation; either version 2 of ! the License, or (at your option) any later version. ! ! Implicit Solvation is distributed in the hope that it will be ! useful, but WITHOUT ANY WARRANTY; without even the implied ! warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. ! See the GNU General Public License for more details. ! ! You should have received a copy of the GNU General Public License ! along with Implicit Solvation; if not, write to the Free Software ! Foundation, Inc., 59 Temple Place, Suite 330, Boston, ! MA 02111-1307, USA. ! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!