The D-Ala2 (crosses), Gly3 (open circle) and Met5 with positive ϕ angles (circled) were indicated in the Ramachandran ϕ, ψ plots for (A) 1, (B) 2 and (C) 3 for residues 2-7 of 20 final structures. Angular order parameters for ϕ (D) and ψ (E) angles calculated from the 20 final structures for 1 (open circles), 2 (filled squares) and 3 (crosses). For calculating the ψ angles of Trp8, Non-carbonyl oxygen atoms of the C-terminal ester (1) and nitrogen atoms of C-terminal amide (2 and 3) were used instead of N (i + 3), respectively.