Captovirus

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.^[1][2]

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

Structure

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

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

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