Q56 / 180 · COMEDK 2017 · Chemistry

The number of disulphide linkages present in insulin are

  • A
    1
  • B
    2
  • Correct answer
    C
    3
  • D
    4

Solution

The number of disulphide linkages present in insulin are three. Two linkages are between two polypeptide chains containing 21 and 30 amino acid residues. In addition, the smaller polypeptide chain (21 amino acids) has also an internal disulphide linkage.

Hence, the correct answer is option: 'C'.

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