The quaternary structure of a protein is due to _______.

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The quaternary structure of a protein refers to the arrangement of multiple polypeptide chains in a protein. This may involve aggregation of two or more polypeptides through non-covalent interactions such as hydrogen bonding, hydrophobic interactions, and electrostatic interactions. Disulfide linkages and covalent bond formation within polypeptides are factors that contribute to the tertiary structure of a protein.

The Quaternary Structure of a Protein Is Due to _______