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. Author manuscript; available in PMC: 2014 Sep 19.
Published in final edited form as: Nat Struct Biol. 2000 Feb;7(2):101–103. doi: 10.1038/72360

Fig. 2.

Fig. 2

Close-up views of the trimers of CIV and PBCV-1. a, d, Shaded-surface representations of the reconstructions viewed down an icosahedral three-fold axis (triangles). Fibers in CIV are centered over the trimers whereas the trimers in PBCV-1 have a central, concave depression and axial channel. b, e, Planar sections through the reconstructed density maps viewed along an icosahedral three-fold axis (triangles). (Bar, 100 Å for panels (a) (b) (d), and (e)). c, f, Comparison of the symmetron facets of CIV (c) and PBCV-1 (f). Five trisymmetrons are highlighted in each reconstruction (green in CIV and blue in PBCV-1) and a single pentasymmetron is colored pink in CIV and yellow in PBCV-1. A pentavalent capsomer (uncolored) lies at the center of each pentasymmetron. Ten capsomers in CIV and eleven in PBCV-1 form the edge of each trisymmetron (black dots). Bar, 500 Å.