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. peptiode bonds
B. van der Waals, forces
C. hydrogen bonds
D. dipole-dipole interactions

Answer

C

Explanation

Secondary structures of protein denotes the shape in which a long polypeptide chain exists. The secondary structure exist in two type of structure `alpha`-helix and `beta`-pleated structure. In `alpha`-helix structure, a polypeptide chain forms all possible bonds by twisting into a right handed screw with -NH group of each amino acid rest hydrogen bonded to of adjacent amino acid, which form a helix.