Secondary protein structure is dependent on
A) hydrophobic interactions.
B) hydrogen bonds between two amino acids.
C) covalent linkages between carbons and nitrogens of adjacent amino acids.
D) covalent linkages between carbons and oxygens of adjacent amino acids.
E) all of these.

Question

Quizplus · Accepted Answer

Secondary protein structure is dependent on hydrogen bonds between two amino acids. Specifically, alpha helices are stabilized by hydrogen bonds between the carbonyl group of one amino acid and the amino group of an amino acid four residues away, while beta sheets are stabilized by hydrogen bonds between adjacent strands. Hydrophobic interactions and covalent linkages between carbons and nitrogens or oxygens of adjacent amino acids are more relevant to tertiary and quaternary protein structures.

Secondary Protein Structure Is Dependent on