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Questions and Answers
What is the main stabilizing force in an α-helix?
What is the main stabilizing force in an α-helix?
- Hydrogen bonds between nearby residues (correct)
- Van der Waals forces between the backbone and side chains
- Electrostatic interactions between side chains
- Hydrophobic interactions
What is the primary influence on the structure of a protein?
What is the primary influence on the structure of a protein?
- The type of amino acid residues
- The presence of hydrogen bonds
- The size of the protein
- The properties of the peptide bond (correct)
Which of the following amino acid residues is most likely to disrupt an α-helix?
Which of the following amino acid residues is most likely to disrupt an α-helix?
- Leucine
- Alanine
- Proline (correct)
- Glycine
What is the main difference between parallel and antiparallel β-sheets?
What is the main difference between parallel and antiparallel β-sheets?
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What is the function of β-turns in proteins?
What is the function of β-turns in proteins?
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What is the approximate percentage of a globular protein that is organized into repetitive structures?
What is the approximate percentage of a globular protein that is organized into repetitive structures?
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What is the main reason why Glycine is often found in β-turns?
What is the main reason why Glycine is often found in β-turns?
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What is the main reason why Proline is often found in β-turns?
What is the main reason why Proline is often found in β-turns?
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What is the main difference between α-helices and β-sheets?
What is the main difference between α-helices and β-sheets?
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What is the main reason why α-helices are often found in proteins?
What is the main reason why α-helices are often found in proteins?
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