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UNTITLED()			     LOCAL			    UNTITLED()

NAME
       obprobe -- create electrostatic probe grid

SYNOPSIS
       obprobe [OPTIONS] type pchg filename

DESCRIPTION
       The obprobe tool	creates	a grid around a	molecule, placing a probe atom
       with  a	specified atom type and	partial	charge at each point to	calcu-
       late 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.

OPTIONS
       If 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

EXAMPLES
       Probe 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  hydropho-
       bic atom	with no	partial	charge:
	     obprobe 37	0.0 pyridines.sdf

SEE ALSO
       obabel(1).

       The web pages for Open Babel can	be found at: <http://openbabel.org/>

AUTHORS
       The obprobe program was contributed by Tim Vandermeersch.

       Open  Babel is developed	by a cast of many, including current maintain-
       ers Geoff Hutchison, Chris Morley, Michael Banck, and innumerable  oth-
       ers who have contributed	fixes and additions.  For more contributors to
       Open Babel, see <http://openbabel.org/wiki/THANKS>

COPYRIGHT
       Copyright (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  MER-
       CHANTABILITY  or	 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
       Public License for more details.

Open Babel 3.1			 Oct 10, 2019			    obprobe(1)

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