Relibase is a web-based database that provides tools for the investigation and analysis of protein-ligand complexes. Relibase provides easy access to all such experimental structures within the Protein Data Bank (PDB).

Relibase features:

• An intuitive web-based user interface
• A fast database search engine
• Standard text searching
• 2D substructure searching
• 3D protein-ligand interaction searching
• Ligand similarity searching
• Clear 3D visualisation using AstexViewer
• Automatic superposition of related binding sites to compare ligand binding modes, water positions, ligand-induced conformational changes, etc.
• Secondary structure classification and searching according to a novel and comprehensive turn and helix assignment scheme

The web accessible version of Relibase is freely available to academic users at the following web addresses;

http://relibase.ccdc.cam.ac.uk
http://relibase.rutgers.edu

Relibase+ is the commercial version of Relibase and has a number of additional features including the ability to generate proprietary databases that are searchable alongside the PDB.

The Relibase(+) client runs on popular web browsers on Windows and UNIX (including Linux) operating systems