A. What is the ? (alpha)- helical dipole and what is themolecular origin of that dipole?
B. Identify two amino acids that are preferred in ? (beta)-sheets. Why might these amino acids be preferred?
C. Peptide bonds are believed to by hydrated by three watermolecules, with one hydrogen bond donated from the N-H and twohydrogen bonds being accepted by the lone pairs of electrons in thecarbonyl group. Would you expect a significant entropic componentto be associated with the formation of secondary structures likealpha-helicies and beta-sheets. Explain.
