DSDBASE version 2( PDB April 2003 relese):

   DSDBASE is a database on disulphide bonds in proteins that provides information on native disulphides and those which are stereochemically possible between pairs of residues in a protein.

This Database is available as two different datasets:

1. PDB entries (April 2003 release)

2. Non-redundant dataset (25% sequence identity cutoff list)