Protein crystallography is a scientific technique used to determine the three-dimensional structure of proteins at the atomic level. This method involves growing crystals of the protein of interest, which can then be analyzed using X-ray diffraction. When X-rays are directed at the crystal, they scatter in specific patterns that can be measured and interpreted to reveal the arrangement of atoms within the protein. The information obtained from protein crystallography is crucial for understanding how proteins function and interact with other molecules. This knowledge can aid in drug design and the development of new therapies for various diseases, as it provides insights into the molecular mechanisms underlying biological processes.