Figure 1. (IMAGE)

National Institutes of Natural Sciences

Figure 1. — Caption

A) high-voltage cryo-electron microscope installed at the Osaka University. B) 250 nm diameter tokyovirus particle reconstructed at 7.7 Å resolution. The 2-fold, 3-fold, and 5-fold symmetry axes of the icosahedral structure are indicated by pentagons, triangles, and teardrop shapes, respectively. h = 7 and k = 13 are indices representing the size of the icosahedral capsid, showing to be an icosahedron with a size of T=309. Norovirus (diameter 40 nm, T=3) is shown in the lower left for size comparison. C) Slice image through the center. From the particle surface, it is composed of MCP (major capsid protein), mCP (minor capsid protein), ScP (scaffold protein), IM (nuclear membrane), and NC (nucleoid). On the nuclear membrane, the characteristic exclusions (*) are seen, and supported by the scaffold proteins (arrows).

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Scientific Reports & Kazuyoshi Murata

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