Published by:
CGP EDU Academic Team
Published on: August 13, 2026
The secondary structure of protein refers to:
A
-helical backbone.
B
Hydrophobic interactions.
C
Sequence of a-amino acids.
D
Fixed configuration of the polypeptide backbone.
Text Solution
Verified by ExpertsThe correct answer is:
D
Secondary structure of proteins is mainly of two types.
(i) 
-helix : This structure is formed when the chain of a-amino acid coils as a right handed screw (called 
- helix) becaues of the formation of the hydrogen bonds between amide group of the same peptide chain.
(ii) 
- plated sheet : In this structure the chains are held together by a very large number of hydrogen bonds between
C = O and NH of different chains.
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