What type of bonding in proteins maintains the integrity of the helical secondary structure?
Correct answer: A. Hydrogen bonds
- A. Hydrogen bonds
- B. Ionic bonds
- C. Disulphide bonds
- D. Both A and B
Explanation
The correct answer is Option A: Hydrogen bonds. Hydrogen bonds are crucial for maintaining the integrity of the secondary structure of proteins, such as the alpha-helix. They form between the carbonyl oxygen of one amino acid and the amide hydrogen of another, stabilizing the helical structure. Option B is incorrect, as ionic bonds are more relevant to the tertiary structure of proteins. Option C is incorrect because disulfide bonds stabilize tertiary, not secondary, structures. Option D is incorrect because it includes ionic bonds, which do not play a primary role in helical secondary structures.
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