BMRB hosts a collection of NMR spectroscopic data for small biomolecules of metabolic interest. The data are supplied by the NMR community and are made publicly available free of charge. The contents of the sample and the quality of the data are primarily the responsibility of the depositor. BMRB relies on the feedback of its user community for the overall integrity of the database. If you come across any questionable data, please contact BMRB with your concerns.