PROTEIN STRUCTURE QUATERNARY STRUCTURE OF PROTEIN

PROTEIN STRUCTURE QUATERNARY STRUCTURE OF PROTEIN

4.5.         Quaternary structure :

Quaternary structure is formed by more than one polypeptide. A protein with multiple polypeptide chains is multimeric in nature . Multimeric protein  exhibit quaternary structure.

                One       Subunit            Monomer

                Two       Subunit            Dimer

                Three    Subunit            Trimer

                Four       Subunit           Tetramer

More than four–Multimers Changes in conformation within individual subunits can cause change in quaternary structure.


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