SYNOPSIS
SMARTS-pattern fixed-file outfileDESCRIPTION
Superimpose two molecules using a quaternion fit. The atoms used to fit the two molecules are defined by the SMARTS pattern given by the user. It is useful to align congeneric series of molecules on a common structural scaffold for 3D-QSAR studies. It can also be useful for displaying the results of conformational generation.Any molecules matching the supplied SMARTS pattern will be rotated and translated to provide the smallest possible RMSD between the matching regions. If a molecule does not match the SMARTS pattern, it will be output with no transformation.
EXAMPLES
Align all the molecules in 'testmv.sdf' on a single molecule of 'testref.sdf' by superimposing them on its N-methylpiperidyl portion (and outputting a new SD file to the standard output):
"obfit '[nh]1c2c(=O)n(C)c(=O)n(C)c2cc1' testref.sdf testmv.sdf"
AUTHORS
The obfit program was contributed by An Fabien FontaineAn -nosplit Open Babel is developed by a cast of many, including currrent maintainers An Geoff Hutchison , An Chris Morley , An Michael Banck , and innumerable others who have contributed fixes and additions. For more contributors to Open Babel, see <http://openbabel.org/wiki/THANKS>
COPYRIGHT
Copyright (C) 1998-2001 by OpenEye Scientific Software, Inc.Some portions Copyright (C) 2001-2007 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.