DIONYSUS contains structures of all the protein-carbohydrate interfaces found in the Protein Data Bank. Each binding site is annotated according to specialized and general databases. Use the interactive form above to find DIONYSUS entries using keywords, amino acid sequence or protein structure. The complete set of parameters for database search is available in Search tab. You can also perform a structural comparison of carbohydrate binding sites and explore their clusters. Finally, we provide a tool for glycosylations analysis. Detailed information on DIONYSUS organisation and different functions is provided in Help page. To get quickly started, use the following links: