Proline is not often found in α-helices of proteins because it
A)has a small,uncharged side chain.
B)has a very bulky side chain.
C)lacks a hydrogen atom on its amide nitrogen.
D)interacts with adjacent amino acids.

Question

Quizplus · Accepted Answer

Proline lacks a hydrogen atom on its amide nitrogen, which is necessary for the formation of hydrogen bonds that stabilize the α-helix structure. This makes it a helix breaker.

Proline Is Not Often Found in α-Helices of Proteins Because