Which of the Following Statements About α-Keratins Is FALSE

question 12

Multiple Choice

Which of the following statements about α-keratins is FALSE?

• A) They include a major class of protein that comprises hair, fingernails and animal skin.
• B) Individual molecules are α-helical.
• C) There is a strip of contiguous hydrophobic surface making a shallow spiral around the helix.
• D) They include a small globular regions covalently linked to the surface.
• E) Pairs of α-helices twist about each other in a coiled-coil structure held together entirely by hydrophobic interactions.

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