Question

.Which hydrogen bonds have been found to stabilize a polypeptide's folded shape?

A. (A) Hydrogen bonds between side chain atoms
B. (B) Hydrogen bonds between backbone atoms
C. (C) Hydrogen bonds between backbone atoms and side chain atoms

Answer 1

Hydrogen bonds between backbone atoms and between backbone atoms and side chain atoms stabilize a polypeptide's folded shape in both α-helix and β-pleated sheet structures as well as in tertiary structures.

Step-by-step explanation:

The hydrogen bonds that have been found to stabilize a polypeptide's folded shape include hydrogen bonds between backbone atoms and hydrogen bonds between backbone atoms and side chain atoms. In the α-helix and β-pleated sheet structures, which are common secondary structures, the hydrogen bonds form primarily between the oxygen atom in the carbonyl group and the hydrogen atom of an amino group within the peptide backbone.


Additionally, in the acquisition of tertiary structure, hydrogen bonds also form between polar side chains and contribute to the three-dimensional folding of the polypeptide.