The folding process involves multiple levels of organization
Primary Structure: The linear sequence of amino acids.
Secondary Structure: Local folding patterns like alpha-helices and beta-sheets, stabilized by hydrogen bonds.
Tertiary Structure: The overall three-dimensional shape of a single protein molecule, formed by interactions between side chains.
Quaternary Structure: The assembly of multiple protein molecules or subunits.
Each protein’s structure is unique and determines its role, whether as an enzyme, hormone, or structural component.