Question

Mature insulin does not contain

• A. A peptide
• B. B peptide
• C. C peptide
• D. Disulphide bonds

Answer 1

The correct option is C C peptide

Mature insulin does not contain the C peptide. The C peptide is required for forming the correct three dimensional structure of the active insulin by bringing the A and B chains in the appropriate orientation. The C peptide is cleaved off from proinsulin to make the functional insulin which contains A and B chains held together by disulphide bonds.