The Nucleic Acid Knowledgebase (NAKB), portal for 3D structural information about Nucleic Acids, is successor to the Nucleic Acid Database (NDB), as described in:
NAKB provides Search, Report, Statistics, Atlas and Visualization for all nucleic-acid containing experimentally determined 3D structures held by NDB and by the Protein Data Bank (PDB), including all major methods: X-ray, Electron Microscopy, and NMR. For each structure, links are provided to external resources that annotate and analyze nucleic acid structures and their complexes.