Multiple choice

Which amino acid is capable of producing a kink in a polypeptide chain?

  1. Tryptophan

  2. Proline

  3. Methionine

  4. Serine

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Proline has a unique cyclic structure where the side chain is bonded to the nitrogen atom of the backbone, which restricts rotation and introduces a kink in the polypeptide chain.