The RCSB PDB (Research Collaboratory for Structural Bioinformatics Protein Data Bank) is a global repository for three-dimensional structural data of biological macromolecules, such as proteins and nucleic acids. It provides researchers with access to a wealth of information that aids in understanding the structure and function of these molecules. The RCSB PDB offers various tools and resources, including visualization software and search capabilities, to help scientists analyze and interpret structural data. It plays a crucial role in fields like biochemistry, molecular biology, and drug design, facilitating advancements in scientific research and discovery.