Table 2 Characteristics of Teratorn-like viruses within teleost genomes
From: Fusion of piggyBac-like transposons and herpesviruses occurs frequently in teleosts
| Species | Intactness of ORFs | Copy No. /haploid | Validity of Genomic integration | piggyBac-herpesvirus fusion | Terminal sequences | Subtypes |
|---|---|---|---|---|---|---|
| S. salar | intact | ~ 8 | integrated (contig-mediated link between Teratorn-like virus and genomic region) | Some piggyBac copies exist near Teratorn-like virus | TIRs of piggyBac-like element exist for a single contig (Aswad A. and Katzourakis A., 2017) | |
| O. mykiss | degraded | – | integrated (ORF degradation) | – | Unidentified (degradation of Teratorn-like virus sequences) | |
| O. kisutch | intact | 1–5 | integrated (contig-mediated link between Teratorn-like virus and genomic region) | Some piggyBac copies exist near Teratorn-like virus | Unidentified (small number of blast hits) | |
| E. lucius | partially degraded | ~ 8 | integrated (contig-mediated link between Teratorn-like virus and genomic region) | – | Unidentified (small number of blast hits) | |
| P. magnuspinnatus | intact | – | unkonwn | – | Unidentified (small number of blast hits) | |
| P. argenteus | unknown (contigs too short) | – | unknown | – | Unidentified (contigs too short) | |
| O. latipes | intact | ~ 25, ~ 5 | integrated (BAC sequencing) | Fused | TIRs of piggyBac-like element exist | 2 subtypes |
| A. limnaeus | intact | 1–2, ~ 4 | likely integrated (scaffold-mediated link between Teratorn-like virus and genomic region) | some piggyBac copies exist near Teratorn-like virus | Unidentified (gaps between Teratorn-like virus and genomic region) | 2 subtypes |
| N. furzeri | intact | 1–2 | unknown | Consistent link between piggyBac and Teratorn-like virus | Unidentified (small number of blast hits) | 2 subtypes? |
| K. marmoartus | intact | – | unknown | – | Unidentified (contigs too short) | 2 subtypes |
| A. citrinellus | intact | – | likely integrated (scaffold-mediated link between Teratorn-like virus and genomic region) | – | Unidentified (small number of blast hits) | |
| O. niloticus | partially degraded | ~ 12, ~ 2 | integrated (fosmid sequencing, scaffold-mediated link between Teratorn-like virus and genomic region, transposon insertion) | Consistent link between piggyBac and Teratorn-like virus sequence for subtype 1 |
Subtype 1: TIRs of piggyBac-like element exist Subtype 2: unidentified | 2 subtypes |
| N. brichardi | intact | ~ 2 | likely integrated (scaffold-mediated link between Teratorn-like virus and genomic region) | – | Unidentified (small number of blast hits) | |
| H. burtoni | intact | ~ 1 | unknown | – | Unidentified (small number of blast hits) | |
| P. nyererei | unknown (contigs too short) | – | unknown | – | Unidentified (contigs too short) | at least 2 subtypes? |
| M. auratus | unknown (contigs too short) | – | unknown | – | Unidentified (contigs too short) | |
| A. polyacanthus | intact | – | likely integrated(scaffold-mediated link between Teratorn -like virus and genomic region) | – | Unidentified (small number of blast hits) | |
| C. semilaevis | degraded | – | integrated (ORF degradation) | some piggyBac copies exist near Teratorn-like virus | Unidentified (degradation of Teratorn-like virus sequences) | |
| C. rhenanus | unknown (contigs too short) | – | unknown | – | Unidentified (contigs too short) | |
| L. crocea | intact | ~ 18 | likely integrated (scaffold-mediated link between Teratorn-like virus and genomic region, transposon insertion) | Consistent link between piggyBac and Teratorn-like virus | Unidentified (gaps between Teratorn-like virus and genomic region) | |
| M. albus | intact (subtype2), degraded (subtype1) | ~ 0.5, ~ 2 | integrated (contig-mediated link between Teratorn-like virus and genomic region, ORF degradation) | Consistent link between piggyBac and Teratorn-like virus | Unidentified (small number of blast hits) | 2 subtypes |
| M. mola | degraded | – | integrated (contig-mediated link between Teratorn-like virus and genomic region, ORF degradation) | Consistent link between piggyBac and Teratorn-like virus | Unidentified (small number of blast hits) | 2 subtypes |