The alpha helix and beta sheet are examples of
A)protein denaturation.
B)protein primary structure.
C)complementary bases.
D)protein tertiary structure.
E)protein secondary structure.

Question

Quizplus · Accepted Answer

Alpha helix and beta sheet are two common types of protein secondary structure, which describe the regular arrangements of amino acid backbones along a protein chain. The alpha helix is a spiral shape created by hydrogen bonding between the carbonyl oxygen of each peptide bond and the amide hydrogen of the fourth amino acid down the chain. The beta sheet consists of protein strands which are arranged side-by-side and held together by hydrogen bonds between their carbonyl and amide groups.

The Alpha Helix and Beta Sheet Are Examples of