1. Secondary Structure

2. Phi () and Psi ()
Page 8

3. Ramachandran Plot
Page 9

4. Figure 1 The classical version of the Ramachandran plot for a) alanine (but often taken as typical for all non-glycines) and b) glycine according to Ramachandran and Saisekharan, The fully allowed regions are shaded, the partially allowed regions are enclosed by a solid line. The connecting regions enclosed by the dashed lines are permissible with slight flexibility of bond angles. These plots were arrived at by computer modelling. Although some overall features of these plots are correct, the details differ from the experimentally observed Ramachandran plots for c) all 19 non-glycines and d) glycine.

6. Anti-parallel beta sheet
Page 18

7. Antiparallel beta sheet
Page 18

8. Parallel beta sheet
Page 19

9. right-handed

11. Alpha Helix
Page 15

12. Dipole moment of an alpha helix
Page 16

13. carboxy
i+4
i+3
i+2
i+1 i
amino

15. Helical Wheels
Page 16