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 Cystoviridae 7 9 dsRNA 3 linear segments 12.6-15.0 yes spherical 85 nm diameter head bacteria Cystoviridae
102 Dallocaviridae 1 1 dsDNA 1 linear segment 109.5-109.6 no predicted head-tail archaea
103 Danacaviridae 1 1 dsDNA 1 linear segment 109.6-109.7 no predicted head-tail archaea
104 Darmviridae 11 14 dsDNA 1 linear segment 93.6-104.1 predicted head-tail bacteria
105 Deltaflexiviridae 1 4 ssRNA(+) 1 linear segment 7.7-8.3 no icosahedral 30 nm diameter fungi Deltaflexiviridae
106 Deltaormycoviridae 1 4 ssRNA 2 linear segments 4.5-4.9 protists, fungi
107 Demerecviridae 15 197 dsDNA 1 linear segment 97.2-138.0 no head-tail 70-90 nm diameter head, 150-160 nm long tail bacteria
108 Dicistroviridae 3 16 ssRNA(+) 1 linear segment 8.0-10.5 no icosahedral 30 nm diameter invertebrates Dicistroviridae
109 Discoviridae 1 6 ssRNA(-) 3 linear segments 6.3-9.7 fungi Discoviridae
110 Dishuiviroviridae 1 1 dsDNA 1 circular segment 24.7-24.8 protists
111 Draupnirviridae 42 67 ssDNA(+); ssDNA(+/-) 1 circular segment 1.5-5.3 predicted icosahedral invertebrates, vertebrates Draupnirviridae
112 Drexlerviridae 33 237 dsDNA 1 linear segment 37.6-54.5 no head-tail 50-75 nm diameter head, 100-170 nm long tail bacteria
113 Druskaviridae 2 2 dsDNA 1 linear segment 102.3-103.3 no head-tail 85 nm diameter head, 115 nm long tail archaea Druskaviridae
114 Duinviridae 10 12 ssRNA(+) 1 linear segment 3.5-4.5 no icosahedral 25 nm diameter bacteria
115 Dumbiviridae 1 7 ssRNA(+/-) 1 circular segment 4.2-5.0 capsidless fungi
116 Duneviridae 3 6 dsDNA 1 linear segment 39.2-47.0 no head-tail 60 nm diameter head, 130 nm long tail bacteria
117 Ehrlichviridae 7 19 dsDNA 1 linear segment 48.5-52.9 no head-tail 40-50 nm diameter head, 100-200 nm long tail bacteria
118 Ekchuahviridae 1 2 dsDNA 1 segment 71.7-80.6 predicted head-tail archaea
119 Endolinaviridae 4 10 ssDNA(+/-) 1 circular segment 2.6-3.2 predicted icosahedral protists
120 Endornaviridae 2 31 ssRNA(+) 1 linear segment 9.6-17.7 capsidless protists, fungi, plants Endornaviridae
121 Epsomviridae 1 1 dsDNA 1 linear segment 659.9-660.0 no predicted head-tail bacteria
122 Eubullaviridae 4 15 ssDNA(+) 1 circular segment 5.3-6.3 no icosahedral 25-30 nm diameter bacteria
123 Eupolintoviridae 2 2 dsDNA 1 linear segment 12.5-12.8 invertebrates, vertebrates Eupolintoviridae
124 Eurekaviridae 1 1 dsDNA 1 circular segment 17.9-18.0 predicted spindle-shaped archaea
125 Euroniviridae 2 3 ssRNA(+) 1 linear segment uncertain invertebrates
126 Felixviridae 3 3 dsDNA 1 linear segment 44.7-46.5 no head-tail 50 nm diameter head, 100 nm long tail bacteria
127 Fervensviridae 1 1 dsDNA 1 linear segment 31.2-31.3 no head-tail 50 nm diameter head, 150 nm long tail archaea
128 Fiersviridae 308 828 ssRNA(+) 1 linear segment 3.2-5.1 no icosahedral 25-26 nm diameter bacteria
129 Filamentoviridae 2 3 dsDNA 1 circular segment 101.1-137.9 yes filamentous 400-800 nm long, 40 nm wide invertebrates
130 Filoviridae 9 17 ssRNA(-) 1 linear segment 13.7-21.0 yes pleomorphic, mostly filamentous 80 nm diameter, 20-1000 nm long vertebrates Filoviridae
131 Fimoviridae 1 33 ssRNA(-) 4-10 linear segments 11.6-18.9 yes spherical 80-150 nm diameter plants Fimoviridae
132 Finnlakeviridae 1 1 ssDNA 1 circular segment 9.1-9.2 inner membrane icosahedral 60 nm diameter bacteria Finnlakeviridae
133 Flaviviridae 5 61 ssRNA(+) 1 linear segment 10.0-11.9 yes spherical 40-60 nm diameter invertebrates, vertebrates Flaviviridae
134 Forsetiviridae 1 2 dsDNA 1 linear segment 43.9-47.2 no head-tail 50 nm diameter head, 155 nm long tail bacteria
135 Fredfastierviridae 1 2 dsDNA 1 linear segment 43.3-43.5 no head-tail 90 nm diameter head, 20 nm long tail bacteria
136 Fusagraviridae 1 20 dsRNA 1 linear segment 8.1-10.8 no icosahedral or capsidless 40 nm diameter protists, fungi, plants
137 Fusariviridae 4 53 ssRNA(+) 1 linear segment 5.9-10.8 capsidless protists, fungi Fusariviridae
138 Fuselloviridae 2 9 dsDNA 1 circular segment 14.7-24.2 no spindle-shaped 900 nm long, 50nm wide archaea Fuselloviridae
139 Fuxiviridae 1 1 dsDNA 1 linear segment 31.9-32.0 no predicted head-tail archaea
140 Gammaflexiviridae 3 4 ssRNA(+) 1 linear segment 6.8-9.6 no filamentous 12 nm diameter, 720 nm long fungi Gammaflexiviridae
141 Gammaormycoviridae 2 6 ssRNA 2 linear segments 4.1-4.7 fungi
142 Gandrviridae 8 8 ssDNA(+/-) 1 circular segment 5.2-9.1 predicted icosahedral invertebrates, vertebrates Gandrviridae
143 Geminiviridae 18 560 ssDNA(+/-) 1-2 circular segments 2.3-5.6 no geminate 18-22 nm diameter, 30-38 nm long plants, invertebrates Geminiviridae
144 Genomoviridae 10 237 ssDNA(+/-) 1 circular segment 1.9-4.0 no icosahedral 20-22 nm diameter fungi, plants, invertebrates, vertebrates
145 Geplanaviridae 18 30 ssDNA(+); ssDNA(+/-) 1 circular segment 1.9-3.0 predicted icosahedral plants, invertebrates, vertebrates
146 Giardiaviridae 1 1 dsRNA 1 linear segment 6.2-6.3 no icosahedral 35 nm diameter protists
147 Globuloviridae 1 4 dsDNA 1 linear segment 18.2-28.4 yes spherical 70-100 nm diameter archaea Globuloviridae
148 Graaviviridae 3 3 dsDNA 1 linear segment 39.7-42.3 no head-tail 55 nm diameter head, 70 nm long tail archaea Graaviviridae
149 Gresnaviridae 1 1 ssRNA(+) 1 linear segment 18.4-18.5 vertebrates
150 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