Multiple Choice
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
Correct Answer:
Verified
Q19: Use a rough diagram to compare the
Q20: An alpha helix is stabilized by<br>A) van
Q21: What does a kinase do?
Q22: Suppose you have discovered a new amino
Q23: Amino acids are joined by a condensation
Q25: Allosteric regulation always involves<br>A) a change in
Q26: Which level(s) of protein structure could be
Q27: _ different genetically-encoded amino acids are found
Q28: Cyclin-dependent kinase activity is regulated by<br>A) phosphorylation.<br>B)
Q29: Which amino acid shown below, glutamine or