Question

An antibody is represented as $H_2{L}_2$ as each of its molecule has four polypeptide chains. Two small light (L) chains. Two longer heavy (H) chains are bound together with the help of

• A. Disulfide bonds
• B. Phosphodiester bonds
• C. Glycosidic bonds
• D. Peptide bonds

Answer 1

The correct option is A Disulfide bonds

Disulfide bonds function to stabilize the tertiary and quaternary structures of proteins and may be intra-protein(i.e, stabilizing the folding of a single polypeptide chain) or inter-protein (i.e., multi-subunit proteins such as antibodies or the A and B chains of insulin).

So, the correct option is 'Disulfide bonds'.