The intense exploration of nucleotide-binding protein structures has created a whirlwind in the field of structural biology and bioinformatics. Thus, the conception and the birth of NIMS. The database is a collection of detailed data on the nucleobases, nucleosides and nucleotides, along with their analogues as well as the protein structures to which they bind. Interaction details such as the interacting residues and all associated values have been made available. As a pioneering step, the Diffraction Precision Index (DPI) for the protein structures, atomic uncertainty for each atom and the computed errors on the inter-atomic distances and angles have been stored in the database. Apart from the above, provision has been made to view the 3D structures of both ligands and protein-ligand structures and their interactions in Jmol as well as JSmol. One of the salient features of NIMS is that it has been interfaced with a user- friendly and query-based efficient search engine. Conceived and developed with the aim to serve a significant section of researchers in the field and address the issue of data integration, NIMS will certainly prove to be an invaluable asset and is available online for free at http://iris.physics.iisc.ernet.in/nims.