A peptide chain attains secondary structure through the formation of:
Correct answer: B. Hydrogen bond
- A. Peptide bond
- B. Hydrogen bond
- C. Ionic bond
- D. Disulphide bond
Explanation
The secondary structure of proteins is primarily stabilized by hydrogen bonds. These bonds occur between the carbonyl oxygen and the amide hydrogen of the peptide backbone, leading to formations such as alpha-helices and beta-sheets. In contrast, peptide bonds create the linear sequence of amino acids and define the primary structure. Ionic bonds and disulphide bonds are more relevant to the tertiary structure, where they contribute to the protein's overall three-dimensional shape.
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