wwPDB: Worldwide Protein Data Bank

Simple and advanced searching for macromolecules and ligands, flexible APIs for programmatic users, specialized 1D-3D visualization tools, Molecule of the Month and other training resources at PDB-101, and more.

Collects 3D volumes & associated information of macromolecular complexes & subcellular structures from electron cryo microscopy & electron cryo tomography; develops resources for searching, data mining, analyzing, validating & visualizing data.

Rich information about all PDB entries, multiple search and browse facilities, advanced services including PDBePISA, PDBeFold and PDBeMotif, advanced visualisation and validation of NMR and EM structures, tools for bioinformaticians.

Supports browsing in multiple languages such as Japanese, Chinese, and Korean; SeSAW identifies functionally or evolutionarily conserved motifs by locating and annotating sequence and structural similarities, tools for bioinformaticians, and more.

Collects NMR data from any experiment and captures assigned chemical shifts, coupling constants, and peak lists for a variety of macromolecules; contains derived annotations such as hydrogen exchange rates, pKa values, and relaxation parameters.