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Virus classification Edit this classification
(unranked): Virus
Genus: Dinodnavirus

Heterocapsa circularisquama DNA virus 01 ICTV 2011

  • HcDNAV Virus name abbr.
  • HcDNAV01 Virus name abbr.
  • AB522601 GenBank accession
  • NC_038702 REFSEQ accession

Dinodnavirus is a genus of viruses that infect dinoflagellates.[1] This genus belongs to the clade of nucleocytoplasmic large DNA viruses. The only species in the genus is Heterocapsa circularisquama DNA virus 01.[2]


The order name, Dinodnavirales, is a combination of Dino, from host dinoflagellate and dna, from its DNA genome. [3]


The virus has an icosahedral capsid ~200 nanometers in diameter.[citation needed]

The genome is a single molecule of double stranded DNA of a ~356-kilobases.[citation needed]

It infects the dinoflagellate Heterocapsa circularisquama.

During replication virions emerge from a specific cytoplasm compartment – the 'viroplasm' – which is created by the virus.[4]


The sole species was originally thought to belong to the family Phycodnaviridae.

DNA studies have shown that the genus belongs in the family Asfarviridae.[5][6]


  1. ^ Tarutani K, Nagasaki K, Itakura S, Yamaguchi M (2001) Isolation of a virus infecting the novel shellfish-killing dinoflagellate Heterocapsa circularisquama. Aquat Microb Ecol 23:103–111
  2. ^ "Virus Taxonomy: 2022 Release". International Committee on Taxonomy of Viruses (ICTV). March 2023. Retrieved 18 August 2023.
  3. ^ "Proposal 2009.001a-fF.A.v6.Dinodnavirus.pdf Pdf" (PDF). International Committee on Taxonomy of Viruses (ICTV). Retrieved 18 August 2023.
  4. ^ Nagasaki K, Tomaru Y, Tarutani K, Katanozaka N, Yamanaka S, Tanabe H, Yamaguchi M (2003) Growth characteristics and intraspecies host specificity of a large virus infecting the dinoflagellate Heterocapsa circularisquama. Appl Environ Microbiol 69:2580–2586
  5. ^ Ogata H, Toyoda K, Tomaru Y, Nakayama N, Shirai Y, Claverie JM, Nagasaki K (2009) Remarkable sequence similarity between the dinoflagellate-infecting marine girus and the terrestrial pathogen African swine fever virus. Virol J 6:178
  6. ^ Karki, Sangita; Moniruzzaman, Mohammad; Aylward, Frank O. (2021). "Comparative Genomics and Environmental Distribution of Large dsDNA Viruses in the Family Asfarviridae". Frontiers in Microbiology. 12: 657471. doi:10.3389/fmicb.2021.657471. PMC 8005611. PMID 33790885.