Turriviridae

Turriviridae is a family of viruses; it contains only one genus, Alphaturrivirus. The archaea Sulfolobus solfataricus serve as natural hosts. There are two species in the genus Alphaturrivirus.^[1][2]

Turriviridae
Virus classification
(unranked):	Virus
Realm:	Varidnaviria
Kingdom:	Abadenavirae
Phylum:	Produgelaviricota
Class:	Belvinaviricetes
Order:	Belfryvirales
Family:	Turriviridae
Genus:	Alphaturrivirus

Taxonomy

The genus contains the following species, listed by scientific name and followed by the exemplar virus of the species:^[2]

• Alphaturrivirus hveragerdiense, Sulfolobus turreted icosahedral virus 2
• Alphaturrivirus yellowstonense, Sulfolobus turreted icosahedral virus 1

Structure

Viruses in Turriviridae have icosahedral geometries, and T=31 symmetry. The diameter is around 74 nm. Genomes are circular.^[1]

Genus	Structure	Symmetry	Capsid	Genomic arrangement	Genomic segmentation
Alphaturrivirus	Icosahedral	T=31		Linear

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. Sulfolobus solfataricus serves as the natural host. Transmission routes are passive diffusion.^[1]

Genus	Host details	Tissue tropism	Entry details	Release details	Replication site	Assembly site	Transmission
Alphaturrivirus	Sulfolobus solfataricus	None	Injection	Budding	Cytoplasm	Cytoplasm	Passive Diffusion