Figure 1 (Left) Outer shell of Invertebrate iridescent virus 2 (IIV-2), thought to consist of skewed triangles with 1562 capsomers (From Wrigley, N.G., J. Gen. Virol., 5, 123, 1969. With permission.) View of capsid symmetry (center) and section (right) of Frog virus 3 (FV-3), showing capsomers of trimeric subunits, transmembrane particles within the lipid bilayer and an internal filamentous nucleoprotein core (From Darcy, F. and Devauchelle, G., Animal Virus Structure (Nermut, M.V., and Steven, A.C., Eds.), Elsevier, Amsterdam 1987 and Darcy-Tripier et al., Virology, 138, 287, 1984. With permission.)
Figure 2 (Left) Electron micrograph of mosquito cell infected with Invertebrate iridescent virus 3 (IIV-3) (Chloriridovirus) showing regular arrangement of particles and virogenic stroma in cytoplasm of infected cell. (Right) negative contrast electron micrograph of particles of Frog virus 3 (FV-3). The bar represents 500 nm. (Courtesy of J. Becnel.)
Figure 3 Simplified diagram showing circular genomic organization of Lymphocystis disease virus 1 (LCDV-1) with abbreviations for ORFs (see Table 1) with significant homology to proteins of known function (Adapted from Tidona and Darai, 1997a.)
Figure 4 Dendrogram of relatedness of major capsid protein amino acid sequences among members of the family Iridoviridae and two distantly related viruses from other families: Paramecium bursaria Chlorella virus 1 (PCBV-1; Phycodnaviridae) and African swine fever virus (ASFV; Asfarviridae). Horizontal distances are proportional to relative sequence deviations among amino acid sequences while vertical positions have no taxonomic signification (from Tidona, Schnitzler, Kehm and Darai, 1998).
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