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Ribbon diagrams of VP28. (a) Monomer of VP28. The N and C termini are labeled. (b) One asymmetric unit consists of 12 molecules consisting of four trimers. This figure shows one trimer of the asymmetric unit. Each monomer of the trimer is shown in a different color. (c) Top view of the trimer. Figures were prepared using the programs MOLSCRIPT (19) and Raster3D (27).
