Can you describe what happens when milk is converted into curd or yoghurt from your understanding of proteins?

Explanation

Proteins are macromolecules formed by the polymerization of amino acids. Structurally proteins are of 4 types.
1) Primary 2) Secondary 3) Tertiary 4) quaternary.
Structure : More than are polyreptide chains assemble to form the quaternary structure. When milk is converted to curd, these complex proteins get denatured, thus converting globuler proteins into fibrous proteins. Therefore by the process of denaturation, the secondary and tertiary structures of proteins are destroyed.