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 typical 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
101 Duinviridae 10 12 ssRNA(+) 1 linear segment 3.5-4.5 no icosahedral 25 nm diameter bacteria
102 Dumbiviridae 1 7 ssRNA(+/-) 1 circular segment 4.2-5.0 capsidless fungi
103 Duneviridae 3 6 dsDNA 1 linear segment 39.2-47.0 no head-tail 60 nm diameter head, 130 nm long tail bacteria
104 Ehrlichviridae 7 19 dsDNA 1 linear segment 48.4-52.9 no head-tail 40-50 nm diameter head, 100-200 nm long tail bacteria
105 Ekchuahviridae 1 2 dsDNA 1 segment 71.7-80.6 predicted head-tail archaea
106 Endolinaviridae 4 10 ssDNA(+/-) 1 circular segment 2.6-3.2 predicted icosahedral protists
107 Endornaviridae 2 31 ssRNA(+) 1 linear segment 9.6-17.7 capsidless protists, fungi, plants Endornaviridae
108 Epsomviridae 1 1 dsDNA 1 linear segment 659.9-660.0 no predicted head-tail bacteria
109 Eupolintoviridae 2 2 dsDNA 1 linear segment 12.5-12.8 invertebrates, vertebrates Eupolintoviridae
110 Eurekaviridae 1 1 dsDNA 1 circular segment 17.9-18.0 predicted spindle-shaped archaea
111 Euroniviridae 2 3 ssRNA(+) 1 linear segment 24.6-29.4 invertebrates
112 Felixviridae 3 3 dsDNA 1 linear segment 44.7-46.5 no head-tail 50 nm diameter head, 100 nm long tail bacteria
113 Fervensviridae 1 1 dsDNA 1 linear segment 31.2-31.3 no head-tail 50 nm diameter head, 150 nm long tail archaea
114 Fiersviridae 308 827 ssRNA(+) 1 linear segment 3.2-5.1 no icosahedral 25-26 nm diameter bacteria
115 Filamentoviridae 2 3 dsDNA 1 circular segment 101.1-137.9 yes filamentous 400-800 nm long, 40 nm wide invertebrates
116 Filoviridae 9 17 ssRNA(-) 1 linear segment 13.7-21.0 yes pleomorphic, mostly filamentous 80 nm diameter, 20-1000 nm long vertebrates Filoviridae
117 Fimoviridae 1 33 ssRNA(-) 4-10 linear segments 11.6-18.9 yes spherical 80-150 nm diameter plants Fimoviridae
118 Finnlakeviridae 1 1 ssDNA 1 circular segment 9.1-9.2 inner membrane icosahedral 60 nm diameter bacteria Finnlakeviridae
119 Flaviviridae 4 97 ssRNA(+) 1 linear segment 8.5-13.3 yes spherical 40-60 nm diameter invertebrates, vertebrates Flaviviridae
120 Forsetiviridae 1 2 dsDNA 1 linear segment 43.9-47.2 no head-tail 50 nm diameter head, 155 nm long tail bacteria
121 Fredfastierviridae 1 2 dsDNA 1 linear segment 43.3-43.5 no head-tail 90 nm diameter head, 20 nm long tail bacteria
122 Fusagraviridae 1 20 dsRNA 1 linear segment 8.1-10.8 no icosahedral or capsidless 40 nm diameter protists, fungi, plants
123 Fusariviridae 3 34 ssRNA(+) 1 linear segment 5.9-10.8 capsidless protists, fungi Fusariviridae
124 Fuselloviridae 2 9 dsDNA 1 circular segment 14.7-24.2 no spindle-shaped 900 nm long, 50nm wide archaea Fuselloviridae
125 Fuxiviridae 1 1 dsDNA 1 linear segment 31.9-32.0 no predicted head-tail archaea
126 Gammaflexiviridae 3 4 ssRNA(+) 1 linear segment 6.8-9.6 no filamentous 12 nm diameter, 720 nm long fungi Gammaflexiviridae
127 Gammaormycoviridae 2 6 ssRNA 2 linear segments 4.1-4.7 fungi
128 Gandrviridae 8 8 ssDNA(+/-) 1 circular segment 5.2-9.1 predicted icosahedral invertebrates, vertebrates Gandrviridae
129 Geminiviridae 15 549 ssDNA(+/-) 1-2 circular segments 2.3-5.6 no geminate 18-22 nm diameter, 30-38 nm long plants, invertebrates Geminiviridae
130 Genomoviridae 10 237 ssDNA(+/-) 1 circular segment 1.9-2.4 no icosahedral 20-22 nm diameter fungi, plants, invertebrates, vertebrates
131 Geplanaviridae 18 30 ssDNA(+); ssDNA(+/-) 1 circular segment 1.9-3.0 predicted icosahedral plants, invertebrates, vertebrates
132 Giardiaviridae 1 1 dsRNA 1 linear segment 6.2-6.3 no icosahedral 35 nm diameter protists
133 Globuloviridae 1 4 dsDNA 1 linear segment 18.2-28.4 yes spherical 70-100 nm diameter archaea Globuloviridae
134 Graaviviridae 2 2 dsDNA 1 linear segment 39.7-42.3 no head-tail 55 nm diameter head, 70 nm long tail archaea Graaviviridae
135 Gresnaviridae 1 1 ssRNA(+) 1 linear segment 18.4-18.5 vertebrates
136 Grimontviridae 8 16 dsDNA 1 linear segment 75.1-112.2 no prolate head-tail 220 nm long and 40 nm wide head, 20 nm long tail bacteria
137 Guelinviridae 5 17 dsDNA 1 linear segment 17.7-19.6 no head-tail 40-44 nm diameter head, 15-37 nm long tail bacteria
138 Gulliviroviridae 1 1 dsDNA 1 linear segment 30.7-30.8 protists
139 Guttaviridae 1 1 dsDNA 1 circular segment 13.7-13.8 yes ovoid 75-130 nm long, 55-80 nm wide archaea Guttaviridae
140 Hadakaviridae 1 1 ssRNA(+) 10-11 linear segments 14.3-15.3 capsidless fungi Hadakaviridae
141 Hafunaviridae 4 10 dsDNA 1 linear segment 56.5-76.9 no head-tail 58 nm diameter head, 94 nm long tail archaea Hafunaviridae
142 Hakuzoviridae 1 1 ssRNA 2 linear segments 10.5 predicted bacteria
143 Haloferuviridae 3 3 dsDNA 1 linear segment 35.7-38.1 no head-tail 50 nm diameter head, 60 nm long tail archaea Haloferuviridae
144 Halomagnusviridae 1 1 dsDNA 1 linear segment 143.8-143.9 no head-tail 47-108 nm diameter head, tail variable or unknown archaea Halomagnusviridae
145 Halspiviridae 1 1 dsDNA 1 linear segment 14.4-14.5 yes spindle-shaped 75 nm long, 35 nm wide archaea Halspiviridae
146 Hantaviridae 8 55 ssRNA(-) 3 circular segments 10.5-14.6 yes pleomorphic, mostly spherical 80-120 nm diameter vertebrates Hantaviridae
147 Helgolandviridae 1 1 dsDNA 1 linear segment 37.5-37.6 no head-tail 49 nm diameter head, 138 nm long tail bacteria
148 Hepadnaviridae 5 27 dsDNA-RT 1 circular segment 3.0-3.6 yes pleomorphic, mostly spherical 42-50 nm diameter vertebrates Hepadnaviridae
149 Hepeviridae 5 10 ssRNA(+) 1 linear segment 6.5-7.4 yes or no spherical or icosahedral 27-34 nm diameter vertebrates Hepeviridae
150 Herelleviridae 34 119 dsDNA 1 linear segment 106.0-167.5 no head-tail 84-94 nm diameter head, 140-220 nm long tail bacteria Herelleviridae