Why Should the Core of Most Globular and Membrane Proteins

question 15

Multiple Choice

Why should the core of most globular and membrane proteins consist almost entirely of α-helix and β-sheets?

• A) Hydrogen bonded structures must be kept away from water solvent.
• B) Highly polar N−H and C=O moieties of the peptide backbone must be neutralized in the hydrophobic core of the protein.
• C) Hydrogen bonding only occurs in the core of proteins.
• D) Trapped water stabilizes the helix and sheet structures.
• E) None are true.

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