Welcome to the NDB
The NDB contains information about experimentally-determined nucleic acids and complex assemblies.
Use the NDB to perform searches based on annotations relating to sequence, structure and function, and to download,
analyze, and learn about nucleic acids.
New: Try out the Nucleic Acid Knowledgebase (NAKB) server (beta release)
NAKB is the planned successor to NDB, as described in this article: Berman, H.M.; Lawson, C.L.; Schneider, B. Developing Community Resources for Nucleic Acid Structures. Life 2022, 12, 540. https://doi.org/10.3390/life12040540
Search DNA
Search DNA and its complexes
Search RNA
Search for RNA structures in the NDB archive or in the Non-Redundant list
Advanced Search
Search for structures based on structural features, chemical features, binding modes, citation and experimental information
RNA 3D Motif Atlas, a representative collection of RNA 3D internal and hairpin loop motifs
Non-redundant Lists of RNA-containing 3D structures
RNA Base Triple Atlas, a collection of motifs consisting of two RNA basepairs
WebFR3D, a webserver for symbolic and geometric searching of RNA 3D structures
R3D Align, an application for detailed nucleotide to nucleotide alignments of RNA 3D structures