Which category of biological molecules commonly involves Van der Waals forces in interactions?

In the realm of biological molecules, Van der Waals forces significantly influence interactions between amino acid side chains in proteins. This interaction contributes substantially to the structural stability of proteins, a critical factor in their biological functions. Proteins, essential macromolecules in living organisms, consist of amino acid chains folded into intricate three-dimensional structures. The specific arrangement of amino acid side chains within these structures is pivotal for protein stability and functionality. Van der Waals forces, operating between these side chains, play a crucial role in maintaining the structural integrity of proteins. The structural stability of proteins, upheld by Van der Waals forces, among other interactions, is essential for their biological functions. Proper protein folding, facilitated by these forces, enables proteins to perform their specific roles, such as enzymatic catalysis, molecular recognition, and cellular signaling.