Structural biology is the study of the three-dimensional shapes and arrangements of biological macromolecules. These macromolecules include proteins, which act as the workhorses of the cell, DNA, our genetic code, and RNA, which plays a crucial role in gene expression. Understanding their structures helps scientists grasp how they function, interact, and contribute to life. Over the years, various breakthroughs have paved the way for a deeper understanding of biological structures. It’s the driving force behind drug discovery, as understanding the structure of biomolecules helps in designing drugs that target specific proteins.