To address these inconsistencies and improve data organization, it is crucial to establish standardized conventions for archiving multiple-state models and their relative populations in the PDB and other structural databases. Additionally, it is essential to ensure that the underlying experimental data, including raw FID data, are archived along with the model coordinates . This will allow for future reinterpretation of data and regeneration of models as methods improve. As illustrated in Figure , for cases of multiple coordinate sets derived from NMR data on fast-exchanging systems, there are (i) a set of raw data, (ii) a single set of chemical shifts, but potentially (iii) two (or more) sets of restraints, and (iv) two (or more) sets of atomic coordinates. In the case of multiple coordinate sets derived from slowly exchanging systems, there is again (i) a single set of data, but (ii) multiple sets of chemical shifts, one associated with each member of the slowly exchanging system, as well as potentially (iii) two (or more) sets of restraints, and (iv) two (or more) sets of atomic coordinates. This data organization required for representing multiple-state NMR structures is not currently supported by public biomolecular structure databases.