The helical structure of protein is stabilized by

Options

A. dipeptide bonds
B. hydrogen bonds
C. ether bonds
D. peptide bonds

Answer

B

Explanation

The `alpha `-helix structure is formed when the chain of `alpha ` amino acids coils as a right handed screw (called `alpha ` helix) because of the formation of hydrogen bonds between amide groups of the same peptide chain, i.e., NH group in one unit is linked to carbonyl oxygen of the third unit by hydrogen bonding. This hydrogen bonding between different units is responsible for holding helix in a position.