Proteins are found to have two different types of secondary structures viz `alpha`-helix and `beta`-pleated sheet structure. `alpha`-helix structure of protein is stabilised by

Options

A. Peptide bonds
B. van der Waals' forces
C. Hydrogen bonds
D. Dipole-dipole interactions

Answer

C

Explanation

In `alpha`-helix structure of proteins, hydrogen bonds are present between - NH group of one amino acid residue and `gt ` C = O group of another amino acid residue.