Virus Properties by Family

Columns in the table with blue text headers can be sorted by clicking on the header text. Clicking twice will reverse the sort order.

Column 1
A numerical designation is provided for each indicated taxonomic family. This number is not persistent and will vary according to the settings of the selection filter. It  provides a means of counting the number of families matching the filters.

Family (sortable)
This column lists the virus families that are recognized in the current Master Species List (MSL).

Genera (sortable)
The number of genera present in the indicated family.

Species (sortable)
The number of species present in the indicated family.

Genome (sortable)
This column describes the chemical nature of the genome (DNA or RNA) and whether it is double-stranded (ds) or single stranded (ss). The suffix -RT indicates that reverse transcription is involved in the replication of the genome.

For ss genomes, the polarity of the genome is indicated: (+), mRNA polarity; (-), complementary to mRNA; (+/-), ambisense. At the family level, viruses with segmented genomes may have segments with different polarities (e.g., some arenaviruses have only ssRNA(-), others have ssRNA(-) and ssRNA(+/-) segments. In this case, the genome composition is designated as ssRNA(-); ssRNA(+/-) to indicate that both forms can be found in the genome.

Genome topology (sortable)
This column indicates if the genome is a linear or circular molecule and the number of segments

Total genome size (kb or kbp)
This column indicates the range of sizes encompassed by genomes of virus isolates described in the current Virus Metadata Resource (VMR).

Envelope (sortable)
This column indicates if the virion is known to have, or not have, a lipid envelope. A value of "Yes or No" indicates the variable presence of an envelope. Viruses identified only by metagenomics will usually not have a value in this column (envelope is "not determined").

Virion shape (sortable)
This column indicates the shape of the virion, as seen by electron microscopy. The column also includes some predicted morphologies but does not include information for many viruses identified only by metagenomics.

Virion size
This column indicates the range of virion sizes encompassed by virus isolates described in the current VMR.

Host (sortable)
This column indicates the known host(s) of viruses in the family. Hosts are uncertain for many viruses, especially those described by metagenomic analysis of environmental samples. The term protist is used to mean any eukaryotic organism that is not an animal, plant or fungus.

ICTV Report Chapter
This column provides a link to the relevant ICTV online report chapter.

Display families with the following properties:

Enter any part of a taxon name at the rank of family or higher to return the matching family names in that hierarchy
Family Genera Species Genome Genome topology Genome size (kb/kbp) Envelope Virion shape Virion size Host ICTV Report Chapter
226 Pleolipoviridae 3 16 ssDNA; ssDNA(+/-) or dsDNA 1 circular segment, or 1 linear segment 7.0–17.0 yes pleomorphic or pseudo-spherical 40–70 nm diameter archaea Pleolipoviridae
227 Pneumoviridae 2 5 ssRNA(-) 1 linear segment 13.3–15.3 yes pleomorphic, filamentous or spherical 70–90 nm diameter and >2000 nm long, or 80–600 nm diameter vertebrates Pneumoviridae
228 Polycipiviridae 3 14 ssRNA(+) 1 linear segment 10.3–12.2 no icosahedral 33 nm diameter invertebrates Polycipiviridae
229 Polydnaviriformidae 2 53 dsDNA multiple circular segments 185.2–567.7 yes ellipsoid 250 nm diameter, 200–900 nm long invertebrates
230 Polymycoviridae 1 10 dsRNA 4–8 linear segments 7.4–12.3 no filamentous or unconventional 12 nm diameter, ≧1000 nm long fungi Polymycoviridae
231 Polyomaviridae 8 118 dsDNA 1 circular segment 3.9–7.4 no icosahedral 40–45 nm diameter vertebrates Polyomaviridae
232 Pootjesviridae 5 11 dsDNA 1 linear segment 143.3–158.6 no head-tail 84–90 nm diameter head, 80–140 nm long tail bacteria
233 Portogloboviridae 1 2 dsDNA 1 circular segment 20.2–20.5 no icosahedral 90 nm diameter archaea Portogloboviridae
234 Pospiviroidae 5 40 ssRNA 1 circular segment 0.2–0.4 capsidless plants Pospiviroidae
235 Potyviridae 12 249 ssRNA(+) 1–2 linear segments 8.1–11.7 no filamentous 11–20 nm diameter, 650–950 nm long plants Potyviridae
236 Poxviridae 22 56 dsDNA 1 linear segment 127.8–359.9 yes oval or brick-shaped 220–450 nm long x 140–260 nm wide x 140–260 nm high invertebrates, vertebrates Poxviridae
237 Pseudototiviridae 4 46 dsRNA 1 linear segment 4.6–6.3 no icosahedral 30–45 nm diameter protists, fungi, vertebrates
238 Pseudoviridae 3 33 ssRNA-RT 2 identical linear segments 4.6–21.9 no spherical or ovoid 20–40 nm diameter protists, fungi, plants, invertebrates Pseudoviridae
239 Pungoviridae 1 1 dsDNA 1 linear segment 37.0–37.1 no head-tail 60 nm diameter head, 125 nm long tail archaea
240 Pyrstoviridae 1 1 dsDNA 1 linear segment 42.2–42.3 no head-tail 50 nm diameter head, 60 nm long tail archaea Pyrstoviridae
241 Qinviridae 1 8 ssRNA(-) 2 linear segments 7.3–8.3 invertebrates Qinviridae
242 Quadriviridae 1 3 dsRNA 4 linear segments 16.8–17.6 no icosahedral 48 nm diameter fungi Quadriviridae
243 Quambiviridae 1 4 ssRNA(+/-) 1 circular segment 4.5–5.2 fungi
244 Redondoviridae 1 2 ssDNA(+/-) 1 circular segment 3.0–3.1 vertebrates Redondoviridae
245 Retroviridae 11 65 ssRNA-RT 2 identical linear segments 2.4–13.3 yes spherical 80–100 nm diameter vertebrates Retroviridae
246 Rhabdoviridae 56 434 ssRNA(-) 1–2 linear segments 9.8–16.2 yes or no bullet-shaped/bacilliform or filamentous 45–100 nm diameter, 100–430 nm long, or variable plants, invertebrates, vertebrates Rhabdoviridae
247 Rhodogtaviriformidae 4 4 dsDNA multisegmented uncertain no oblate, head-tail 45 nm long and 65 nm wide head, 50 nm long tail bacteria
248 Roniviridae 2 4 ssRNA(+) 1 linear segment 26.2–29.2 yes rod-shaped 40–60 nm diameter, 150–200 nm long invertebrates Roniviridae
249 Rountreeviridae 6 38 dsDNA 1 linear segment 16.6–18.9 no head-tail 55 nm diameter head, 27 nm long tail bacteria
250 Rudiviridae 7 17 dsDNA 1 linear segment 20.2–36.5 no filamentous 23–38 nm diameter, 830–900 nm long archaea Rudiviridae