Virus classification e
(unranked): Virus
Realm: Varidnaviria
Kingdom: Bamfordvirae
Phylum: Preplasmiviricota
Class: Tectiliviricetes
Order: Belfryvirales
Family: Turriviridae
Genus: Alphaturrivirus

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]


The genus contains the following species:[2]


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


  1. ^ a b c "Viral Zone". ExPASy. Retrieved 13 August 2015.
  2. ^ a b "Virus Taxonomy: 2020 Release". International Committee on Taxonomy of Viruses (ICTV). March 2021. Retrieved 22 May 2021.