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

`alpha`-Helix structure of protein is stabilised by hydrogen bonds between -NH- group of one amino acid residue and the group of another amino acid residue.