Figure 8
Section of the power spectrum [|G_{{\hat {\bf n}}}({\overline \nu})|^2] in the plane (t, [varphi]) for 1dy5 obtained by filtering [|G_{{\hat {\bf n}}}(\nu)|^2] at the characteristic frequency [nu] for [alpha]-helix identification. The boxes are centred on the [alpha]-helix directions calculated from the published coordinates for chain A (red) and chain B (blue). The lengths of their sides are equal to the steps used to define the grid. The dashed line indicates the restriction introduced by the space-group symmetry.  [article HTML]

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