What Would You Expect About the Formation of an α-Helix

Multiple Choice

What would you expect about the formation of an α-helix for a segment of a protein chain that contains lysine approximately every fourth residue with all other residues being mostly hydrophobic?

A) Helix formation would be favored at low pH.
B) Helix formation would be favored at high pH.
C) Helix formation would be favored at neutral pH.
D) Helix formation would never occur regardless of pH.