collected information on the preparation and characterisation of HEAVY-ATOM derivatives of protein crystals.

Aims to provide a fully searchable database for the sequences of peptaibols. It deals primarily with naturally-occurring peptides, generally these have a fungal origin.

is a database of structure-based alignments for homologous protein families. It provides annotated structural alignments in various formats, superimposed structures, links to other databases and the alignment and searching interface to the program FUGUE.

is a database of critically evaluated crystallographic data for metals, including alloys, intermetallics and minerals.