Macromolecular assemblies is a fundamental concept and active research area in molecular biology, biochemistry, and biophysics. It focuses on the investigation of multicomponent complexes formed by the specific, non-covalent association of biological macromolecules such as proteins, nucleic acids, lipids, and carbohydrates. This field explores their intricate structures, dynamic behaviors, assembly pathways, and essential roles in mediating a vast array of cellular functions and biological processes, highlighting how the collective properties of these components give rise to complex biological machinery.