The secondary structure of a protein refers to
The secondary structure of a protein refers to
- hydrophobic interactions
- fixed configuration of the polypeptide backbone
- sequence of α-amino acids
- α helical backbone
Answer
Secondary structure of proteins is mainly of two types:
(i) α-helix: This structure is formed when the chain of α-amino acid coils as a right handed screw (called α-helix) because of the formation of hydrogen bonds between amide groups of the same peptide chain.
(ii) β-plated sheet: In this structure, the chains are held together by a very large number of hydrogen bonds between CO and NH of different chains.
The correct option is D.