Abstract
The increasing size and complexity of the three dimensional (3D) structures of biomacromolecules in the Protein Data Bank (PDB) is a reflection of the growth in the field of structural biology. Although the PDB archive was initially used only in the field of structural biology, it has grown to become a valuable resource for understanding biology at a molecular level and is critical for designing new therapeutic options for various diseases. The many uses of the PDB archive depend upon on the tools and resources for both data management and for data access and analysis.