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Question
Polylysine is a random coil when the pH is less than 11, while it forms an ï¡-helix if the pH is raised to greater than 12. This is because at pH 12:a. the lysine residues are negatively charged which electrostatically stabilizes the helix.
b. the positive charges on the lysine residues stabilizes the ï¡-helix.
c. the lysine residues are neutral which eliminates electrostatic repulsion between the R groups.
d. the high concentration of OHï€ ions in solution reduces the electrostatic repulsion between the R-groups.
e. the lysine side chain changes configuration with pH.
Answer
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