Proline is a "helix-breaking" residue because
A) its R-group is too large to be accommodated in the alpha helix interior
B) its R-group is too hydrophobic to interact with water surrounding the alpha helix
C) its backbone nitrogen can only form hydrogen bonds in the context of a pleated beta sheet
D) cyclization prevents its backbone nitrogen from participating in hydrogen bonding that stabilizes the helix
Correct Answer:
Verified
Q19: You have discovered an enzyme that has
Q20: D- and L- amino acids
A) contain different
Q21: A particular polypeptide has a molecular weight
Q22: The Dalton unit, which is used to
Q23: An average molecular weight for a protein
Q25: An alpha helix is stabilized by
A) van
Q26: A beta-pleated sheet is stabilized by
A) hydrogen
Q27: Short unstructured regions of a protein that
Q28: In a beta-pleated sheet,
A) adjacent polypeptide strands
Q29: Which of the following is NOT true
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