Biochemistry 4th Edition by Christopher Mathews,Kensal van Holde, Dean Appling, Spencer Anthony Cahill

Exercise 4

In the protein adenylate kinase ,the C-terminal region is -helical, with the sequence
Val -Asp-Asp- Val-Phe -Ser-Gln- Val -Cys-Thr-His- Leu -Asp-Thr- Leu -Lys-
The hydrophobic residues in this sequence are presented in boldface type. Suggest a possible reason lor the periodicity in their spacing.