Viral capsid structures

Virus Particle Explorer (viperdb) is a database of viral capsid structures, featured recently in the Netwatch column in Science (which is where I saw it). It is at http://viperdb.scripps.edu/main.php - you need to register in order to use it but I did this in seconds. There was a commentary in the Journal of Virology in December 2001 which describes the database - follow this link to read it.