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![[Figure 5]](yt5034fig5mag.jpg)
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Figure 5
A helical structure with various distinct descriptions of helical assembly. The helical structure of bacteriophage major coat protein (PDB entry 1ifd) is used as an example here to illustrate the variations. In the figure, an individual asymmetric subunit is presented by a color isosurface entity and each color represents a helix specified by the helical symmetry. The first [5, 0] helical symmetry given in the PDB file has a corresponding 1-D helical symmetry of [5, 0, −33.2, 16.0]. The other two helical symmetry assignments, which are more meaningful in terms of reflecting structural characteristics of the helical assembly, are given as [5, 0, 38.8, 16.0] and [10, −5, 5.5, 32.0] |
![[Figure 5]](yt5034fig5.jpg)
 | STRUCTURAL BIOLOGY |
ISSN: 2059-7983
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