Insulin Is a Polypeptide Hormone That Contains 2 Short Polypeptide

Multiple Choice

Insulin is a polypeptide hormone that contains 2 short polypeptide chains linked by 2 interstrand disulfide bonds.Which of the following treatments would NOT be useful for determining its primary structure?

A) reduction of the peptides with SDS
B) sequencing of the peptides with Edman chemistry
C) separation of the peptides by chromatography techniques
D) alkylation of the peptides with iodoacetate