Figure 2.

Two views of the helical structure observed at 6.05 ns. One or two α-carbon atoms are labeled in each turn for the visualization of the number of residues per turn. The view perpendicular to the helix axis shows backbone oxygen and hydrogen atom pairs within 2.6 Å, including ten (i, i+4) pairs corresponding to α-turns and four (i, i+3) pairs corresponding to β-turns, including 3₁₀ helix turns. For clarity, sidechains are not shown in the view along the helical axis from the C-terminus (lower right). Atom colors and other descriptions are the same as in Figure 1.