3DCrunch was a Very Large Scale Protein Modelling Project, which was run from May 18 to 20 1998 at the Silicon Graphics Advanced Technology Center in Cortaillod (Ne) Switzerland.

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• People and institutions involved in 3DCrunch:

The aim of 3Dcrunch is to submit all entries of the SWISS-PROT and trEMBL databases to SWISS-MODEL. Furthermore, all sequences of bacterial origin will be submitted to fold the recognition algorithm implemented in FoldFit. Taken together, these approaches will yield structural models for all sequences with clear similarities to proteins of know 3-D structure and a suggested fold class for all bacterial sequences.

All protein sequences which are suitable for modelling through comparative methods yielded co-ordinates which were stored as individual files as is customary at the Protein Data Bank (PDB). These files however feature an extension of the classical PDB format to include the project concept of the Swiss-PdbViewer. Indeed, each file not only contain the co-ordinates of the model, but also those of the ideally superimposed templates used during the procedure along with relevant textual information. Thereby users can take full advantage of the SWISS-MODEL/Swiss-PdbViewer comparative protein modelling and structure analysis environment, as each of the 64,000 entries in the database represents a fully integrated project-specific data set.