Question

α-helices and β-sheets are two types of secondary structure found in polypeptides.

a. What phi and psi angles describe the amino acids in a helix and sheet respectively?

b. Draw a representative diagrams, with appropriate labeling, to illustrate a helix and a sheet. On your diagram label the hydrogen bonds that are responsible for providing stability to these structures. You must illustrate your bonds using the appropriate H-bond donor and H-bond acceptor.

Answer 1

Hi, i am sorry Alpha helix structure has been taken from online resources (because it is impossible to draw on a white paper) sice the below figure is more informative and very clear to understand.