In the structure of proinsulin in humans, disulphide bonds exist

Question

In the structure of proinsulin in humans, disulphide bonds exist (A) between B peptide and C peptide. (B) between A peptide and B peptide. (C) between C peptide and A peptide. (D) between A and C peptide as well as B and C peptide.

Tardigrade Admin · Accepted Answer

In mammals, including humans, insulin is synthesized as a prohormone, proinsulin. It contains A peptide (21 amino acids), B peptide (30 amino acids) and C peptide (31 amino acids). Disulfide bonds are present between A and B peptides and within A peptide as follows: <img class="img-fluid question-image" alt="Solution" src="https://cdn.tardigrade.in/q/nta/b-fpzngry1fydr4ffg.jpg" />

Q. In the structure of proinsulin in humans, disulphide bonds exist

between B peptide and C peptide.

between A peptide and B peptide.

between C peptide and A peptide.

between A and C peptide as well as B and C peptide.

In mammals, including humans, insulin is synthesized as a prohormone, proinsulin. It contains A peptide (21 amino acids), B peptide (30 amino acids) and C peptide (31 amino acids). Disulfide bonds are present between A and B peptides and within A peptide as follows: