Question

What is meant by tertiary structure of proteins?

Answer 1

The helical polypeptide chain undergoes coiling and folding to form a complex three-dimensional shape referred to as tertiary structure of proteins. These coiling and folding hide the non-polar amino acid chains in the interior of molecule and expose the polar side chains to the exterior. The tertiary structure is held together by the weak non-covalentinteracting formed between various parts of the polypeptide chain.

Answer 2

Dear Student,

● Tertiary structure of proteins -

• It is 3-dimensional structure of protein characterized by single polypeptide chain with multiple secondary structures.
• It is stabilized by bonds between side chains and side chains with peptide backbone.
• Bonds involved are disulphide bridges, hydrogen bonds, ionic bonds, hydrophobic bonds.
• It is destroyed during denaturation of proteins.

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