bookmark DisProt / Database of Protein Disorder Annotates protein sequences for intrinsically disorder regions from the literature. DisProt classifies intrinsic disorder based on experimental methods and three ontologies for molecular function, transition and binding partner. It holds information on more than 800 entries of intrinsically disordered proteins (IDPs) or regions (IDRs) that exist and function without a well-defined three-dimensional structure. The assessment of disorder is based on experimental evidence, such as X-ray crystallography and nuclear magnetic resonance (primary techniques) and a broad range of other experimental approaches (secondary techniques). Confident and ambiguous annotations are highlighted separately. DisProt is intended to provide an invaluable resource for the research community for a better understanding structural disorder and for developing better computational tools for studying disordered proteins.