The two polypeptides of human insulin are linked together by

MCQ

A
covalent bond
✓
disulphide bridges
C
hydrogen bonds
D
phosphodiester bond.

✓

Answer

Correct option: B.

disulphide bridges

b
(b) : Human insulin is made up of $51$ amino acids arranged in two polypeptide chains. Chain $A$ has $21$ amino acids and chain $B$ has $30$ amino acids. The two polypeptide chains are interconnected by disulphide bridges or SSlinkages.

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