Figure 2.

A projection of the helical lattice showing the monomer axial rise, z ($0.48\pm 0.01\text{nm}$ per monomer), and the packing arrangement at the radius of the reference point ($R=2.42\pm 0.02\text{nm}$). The dotted red line shows the shift between monomers that are on top of one another. The dotted blue line shows the axial rise between adjacent monomers. ${\varphi }_r={\gamma }_i\text{mod}2\pi$, where ${\gamma }_i$ is defined in Eq. 5. To see this figure in color, go online.