Family: Permutotetraviridae (interim)
This is a summary page created by the ICTV Report Editors using information from associated Taxonomic Proposals and the Master Species List.
Edited by: Jens H. Kuhn
Posted: November 2024
Summary
The family Permutotetraviridae includes ssRNA(+) viruses of invertebrates (Table 1 Permutotetraviridae). The family Permutotetraviridae was established in 2012 (Master Species List #26).
Table 1 Permutotetraviridae. Characteristics of members of the family Permutotetraviridae.
| Characteristic | Description |
| Example | Euprosterna elaeasa virus (AF461742), species Alphapermutotetravirus euprosternae, genus Alphapermutotetravirus |
| Virion | Icosahedral, 40 nm diameter, T=4 quasi-symmetry (Figure 1 Permutotetraviridae) |
| Genome | ssRNA(+), 1 linear segment, 5.6–5.7 kb with a 5′-terminal VPg and a 3′-terminal pseudoknot (Figure 2 Permutotetraviridae) |
| Replication | Cytoplasmic, in association with host cell membranes, through dsRNA intermediates |
| Translation | From genomic size and subgenomic size mRNAs, autoproteolytic cleavage |
| Host range | Invertebrates (Lepidoptera) |
| Taxonomy | Realm Riboviria, kingdom Orthornavirae: 1 genus, 2 species (Figure 3 Permutotetraviridae) |
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| Figure 1 Permutotetraviridae. Schematic of virion (image from ViralZone (viralzone.expasy.org), under a Creative Commons Attribution 4.0 International License, credit: SwissBioPics). |
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| Figure 2 Permutotetraviridae. Genome organisation of Euprosterna elaeasa virus, a member of the family Permutotetraviridae. Boxes indicate open reading frames as annotated on GenBank accession AF461742. |
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| Figure 3 Permutotetraviridae. Relationships of the taxa connected to the family Permutotetraviridae. |
Derivation of names
Permutotetraviridae: from the Latin permutare, meaning "to change thoroughly" and the Ancient Greek τετρα (tetra), the Greek cardinal 4, referring to the type of RdRP (replicase) whose active site is permuted and the T=4 capsid architecture of viruses in the family; the suffix -viridae for family taxa
Alphapermutotetravirus: from the Ancient Greek ἄλφα (álpha), the first letter of the Greek alphabet and Permutotetraviridae