Which of the Following is the Mechanism by Which Proinsulin

Question

Which of the following is the mechanism by which proinsulin is converted into insulin?
A)by proteolytic excision of a specific peptide
B)by allosteric binding of glucose
C)by phosphorylation to the active form
D)by removal of phosphate by converter enzymes

Accepted Answer

Proinsulin is converted into insulin by the proteolytic excision of a specific peptide chain, also known as C-peptide. This process occurs in the Golgi apparatus of pancreatic beta cells.