Raphidovirus

Raphidovirus
Virus classification Edit this classification
(unranked): Virus
Realm: Varidnaviria
Kingdom: Bamfordvirae
Phylum: Nucleocytoviricota
Class: Megaviricetes
Order: Algavirales
Family: Phycodnaviridae
Genus: Raphidovirus

Raphidovirus (likely misspelled Rhaphidovirus) is a genus of viruses, in the family Phycodnaviridae. Alga serve as natural hosts. There is only one species in this genus: Heterosigma akashiwo virus 01 (HaV01, Raphidovirus japonicum).

Structure

Schematic drawing of a typical Phycodnaviridae virion (cross section and side view)

Viruses in Raphidovirus are enveloped, with icosahedral and round geometries, and T=169 symmetry. The diameter is around 100-220 nm. Genomes are linear, around 295kb in length.

GenusStructureSymmetryCapsidGenomic arrangementGenomic segmentation
RaphidovirusIcosahedralT=169EnvelopedLinearMonopartite

Life cycle

Viral replication is nucleo-cytoplasmic. Replication follows the DNA strand displacement model. DNA-templated transcription is the method of transcription. The virus exits the host cell by lysis via lytic phospholipids. Alga serve as the natural host. Transmission routes are passive diffusion.

GenusHost detailsTissue tropismEntry detailsRelease detailsReplication siteAssembly siteTransmission
RaphidovirusAlgaNoneCell receptor endocytosisLysisNucleusCytoplasmPassive diffusion

References

  1. 1 2 3 "Viral Zone". ExPASy. Retrieved 15 June 2015.
  2. ↑ "Virus Taxonomy: 2024 Release". International Committee on Taxonomy of Viruses. Retrieved 23 March 2025.
  3. ↑ "History of the taxon: Species: Raphidovirus japonicum (2024 Release, MSL #40)". International Committee on Taxonomy of Viruses. Retrieved 23 March 2025.