Rasmol download: Free program used to view PDB structures. Learning how to use the program is a bit difficult at first, but once you figure it out, it becomes really useful.

The Protein Database: Formerly housed on the web at Brookhaven National Labs, this database contains the structures of thousands of proteins. Scientists deposit structures, determined through X-ray crystallography and/or NMR, on the database for all the world to use. To find a given protein, go to the “Search Lite” option and type in the name of your desired protein. You will then be able to download a 3-D structure of the protein, in the file format .pdb. To view the structure, you will need Rasmol or some other. pdb-viewing application.