Databases and the 3D-modeling and visualization tools for comparisons of protein structures.


 National Center for Biotechnology Information: Genetic and protein sequence database


 Expert Protein Analysis System: Database and utilities for protein structural analyses


 Genetic Computer Group: Sequence comparison and alignment tools


 Protein Explorer: Structural visualizations based on CHIME scripts. Simple but user friendly


 SWISS PDB Viewer: Companion utility for the ExPASY system. Allows for complex control and manipulation of 3D structures


 POV-Ray: High-end rendering engine for SWISS PDB-Viewer. Produces hi-res images of protein structural models.