Figure 1 Negative contrast electron micrograph of Sulfolobus spindle-shaped virus 1 (SSV-1) virions, bound to a membrane vesicle (left) or isolated (right) (Stedman et al., 1999). The bars represent 100 nm.
Figure 2 Genome organization of Sulfolobus spindle-shaped virus 1 (SSV-1). ORFs are shown as arrows and labeled with gene names. The major virion protein genes (VP1, VP3 and VP2) are labeled in red. The viral integrase gene, ORF d335, is labeled in green. ORFs shown to be essential for virus function are labeled in blue. ORFs shown to be non-essential for virus function are labeled in pink. The viral attachment site is labeled as attP. Transcripts are shown as solid arrows and labeled. Transcripts T1 and T2 start at the same promoter and overlap, and transcripts T4, T7 and T8 similarly overlap. The termination site of transcript T9 is not known.