General features of the HdIV, HfIV, TrIV and CsIV genomes.

For each of the 4 sequenced IVs, we show: the genome size, the calculated genome % GC content, the number of known viral segments, the total number of putative open reading frames (ORF), the number of ORFs belonging to a multigene family, the number of ORFs currently identified for each of the multigene families (see text for a description of the families; OSSP: ovary-specific secreted protein), the number of ORFs present as single copies, and the calculated predicted IV genome coding density. (+1*) indicates the additional HdIV gene previously described and not identified during sequencing in this study; (+4**) indicates the 4 new HfIV ORFs identified in this work by alignment with HdIV sequences (see Figure S1).