In insulin, two peptide chains are held together in a single unit by

Question

Quizplus · Accepted Answer

Disulfide bridges are covalent bonds formed between two cysteine residues through oxidation of their thiol groups. Insulin contains two peptide chains held together by two disulfide bridges. A is incorrect because insulin does not have a prosthetic group. B is a random string of characters and not a valid option. D and E are incorrect because hydrogen bonds and salt bridges are not strong enough to hold peptide chains together as a unit.

In Insulin, Two Peptide Chains Are Held Together in a Single