Captovirus

Gammalipothrixvirus
Virus classification
(unranked):	Virus
Realm:	Adnaviria
Kingdom:	Zilligvirae
Phylum:	Taleaviricota
Class:	Tokiviricetes
Order:	Ligamenvirales
Family:	Ungulaviridae
Genus:	Captovirus
Species
	Captovirus AFV1
Synonyms
	Captovirus ICTV 2021 ; Gammalipothrixvirus ICTV 2004 ; species: Captovirus yellowstonese ICTV 2023 ; Captovirus AFV1 ICTV 2021 ; Acidianus filamentous virus 1 ICTV 2004, Virus Name ; AFV1 Name abbr ;

Captovirus is a genus of dsDNA viruses in the family Ungulaviridae. Archaea acidianus serve as natural hosts. There is only one species in this genus: Captovirus AFV1, which was renamed to Captovirus yellowstonese in ICTV 2023 release.¹²

Structure

Model of the virion of AFV-1, *Captovirus* (cross section) source ↗

Viruses in Captovirus are enveloped, with rod-shaped geometries. The diameter is around 24 nm, with a length of 900 nm. Genomes are linear, around 20kb in length. The genome codes for 40 proteins.¹

Genus	Structure	Symmetry	Capsid	Genomic arrangement	Genomic segmentation
Captovirus	Rod-shaped		Enveloped	Linear	Monopartite

Genome map of AFV-1, *Captovirus* source ↗

Life cycle

Viral replication is cytoplasmic. Entry into the host cell is achieved by adsorption into the host cell. DNA-templated transcription is the method of transcription. Archaea acidianus serve as the natural host. Transmission routes are passive diffusion.¹

Genus	Host details	Tissue tropism	Entry details	Release details	Replication site	Assembly site	Transmission
Captovirus	Archea: acidianus	None	Injection	Budding	Cytoplasm	Cytoplasm	Passive diffusion

References

"Viral Zone". ExPASy. Retrieved 15 June 2015.
"Virus Taxonomy: 2023 Release". International Committee on Taxonomy of Viruses (ICTV). March 2023. Retrieved 6 February 2025.

External links

[ViralZone-1] "Viral Zone". ExPASy. Retrieved 15 June 2015.

[ICTV-2] "Virus Taxonomy: 2023 Release". International Committee on Taxonomy of Viruses (ICTV). March 2023. Retrieved 6 February 2025.

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