Which of the following help maintain the three-dimensional structure of a typical protein? 1. Attractions between residues with opposite charges 2. Interconversions between alpha helices and beta sheets 3. Disulfide bonds between cysteine residues 4. Hydrogen bonding between different amino acids in a polypeptide chainGroup of answer choices1, 3, 41 and 22, 3, 42 and 4All of 1-4
Question
Which of the following help maintain the three-dimensional structure of a typical protein? 1. Attractions between residues with opposite charges 2. Interconversions between alpha helices and beta sheets 3. Disulfide bonds between cysteine residues 4. Hydrogen bonding between different amino acids in a polypeptide chainGroup of answer choices1, 3, 41 and 22, 3, 42 and 4All of 1-4
Solution
The correct answer is 1, 3, 4.
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Attractions between residues with opposite charges: This is true. Oppositely charged residues can form ionic bonds, which help stabilize the protein's structure.
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Interconversions between alpha helices and beta sheets: This is not typically involved in maintaining a protein's structure. While proteins can contain both alpha helices and beta sheets, they do not usually interconvert under physiological conditions.
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Disulfide bonds between cysteine residues: This is true. Disulfide bonds are covalent bonds that can form between the sulfur atoms of two cysteine residues, providing a strong force to maintain the protein's structure.
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Hydrogen bonding between different
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