NAMEobprobe - create electrostatic probe grid
SYNOPSISobprobe [OPTIONS] type pchg filename
DESCRIPTIONThe obprobe tool creates a grid around a molecule, placing a probe atom with a specified atom type and partial charge at each point to calculate the MMFF94 energy. This can be used for docking experiments to test hydrogen-bond affinity, electrostatic potential, etc. Output is sent to standard output using the Gaussian Cube format.
OPTIONSIf no filename is given, obprobe will give all options including the example probes. -s stepsize Set the resolution of the grid (stepsize) -p padding Set the padding -- extra distance on each side of the box formed by the molecule. type MMFF94 atom type pchg MMFF94 partial charge
EXAMPLESProbe the file pyridines.sdf using a carbonyl oxygen -- a hydrogen bond acceptor with partial charge -0.57: obprobe 7 -0.57 pyridines.sdf Probe the file pyridines.sdf using a phenyl carbon atom -- a hydrophobic atom with no partial charge: obprobe 37 0.0 pyridines.sdf
SEE ALSObabel(1). The web pages for Open Babel can be found at: <//openbabel.org/>
AUTHORSThe obprobe program was contributed by Tim Vandermeersch. Open Babel is developed by a cast of many, including currrent maintainers Geoff Hutchison, Chris Morley, Michael Banck, and innumerable others who have contributed fixes and additions. For more contributors to Open Babel, see <//openbabel.org/wiki/THANKS>
COPYRIGHTCopyright (C) 2006-2008 by Tim Vandermeersch Some portions Copyright (C) 2004-2008 by Geoffrey R. Hutchison and other contributors. This program 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 version 2 of the License. This program 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. OBPROBE(1)