question: Which resource is used for visualisation of non-covalent contacts?
answer: The Protein Contacts Atlas is an interactive resource of non-covalent contacts from over 100,000 PDB crystal structures. The Protein Contacts Atlas enables researchers from different disciplines to investigate diverse questions in the framework of non-covalent contacts, including the interpretation of allostery, disease mutations and polymorphisms, by exploring individual subunits, interfaces, and protein-ligand contacts and by mapping external information. The Protein Contacts Atlas is available at http://www.mrc-lmb.cam.ac.uk/pca/ and also through PDBe.