The amino acid referred to as the "helix breaker" (because it lacks the hydrogen atom needed for hydrogen bonding)is
A)leucine.
B)proline.
C)methionine.
D)valine.
E)phenylalanine.

Question

Quizplus · Accepted Answer

The amino acid referred to as the "helix breaker" is proline because its structure lacks the hydrogen atom needed for hydrogen bonding, which is essential for the formation of alpha-helices. Proline has a unique ring structure that causes it to have limited flexibility, which makes it a natural disrupter of the alpha-helix structure.

The Amino Acid Referred to as the "Helix Breaker" (Because