A computer-implemented system and method is provided for analyzing the rigidity of substructures within a molecule represented as atomic coordinate and bond data. The system includes a preprocessor for selectively eliminating from the data those bonds below a predetermined strength to thereby generate...http://www.google.de/patents/US6014449?utm_source=gb-gplus-sharePatent US6014449 - Computer-implemented system for analyzing rigidity of substructures within a macromolecule