The amino acid that destabilizes alpha-helical structures and is usually found at the ends of alpha helices is
A)glycine.
B)alanine.
C)asparagine.
D)glutamate.

Question

Quizplus · Accepted Answer

Glycine is the smallest amino acid and lacks a side chain. Its flexibility and ability to rotate freely around the alpha-carbon make it ideal for breaking the repetitive structure of alpha helices, especially at the ends where it can cause a kink.

The Amino Acid That Destabilizes Alpha-Helical Structures and Is Usually