Victorivirus (taxid:674981)



Non enveloped, icosahedral virion composed of a single capsid protein (CP), about 40 nm in diameter. The capsid has a T=2* icosahedral symmetry.



Linear dsRNA genome of 4.6-6.7 kb. Contains 2 overlapping ORFs gag and pol, respectively encoding CP and RdRp.
Some isolates contain additional satellite dsRNAs which encode "killer" proteins and are encapsidated separately.


The dsRNA genome is never completely uncoated, to prevent activation of antiviral state by the cell in response to dsRNA. The viral polymerase synthesizes a mRNA, which is translocated to the cell cytoplasm where it is translated.
Translation is initiated on a unique internal ribosome entry site (IRES) element situated at the 5'-UTR.
In most totiviruses, the plus-strand viral transcript is flanked by a 5'untranslated region (5'-UTR) and a 3'-UTR and directs the translation of a major CP (Gag) and a minor fusion protein CP-RdRP (Gag-Pol) via a -1 ribosomal frameshift.
In other totiviruses (e.g. Hv190SV), RDRP is detected only as a separate, nonfused polypeptide and may be expressed through a termination-reinitiation mechanism.




  1. Virus remains intracellular.
  2. Transcription of the dsRNA genome by viral polymerase occurs inside the virion, so that dsRNA is never exposed to the cytoplasm. This plus-strand transcript is used as template for translation.
  3. (+)RNAs are encapsidated in a sub-viral particle, in which they are transcribed to give RNA (-) molecules with which they become base-paired to produce dsRNA genomes.
  4. Mature virions are transmitted to new cell by cytoplasmic exchange, sporogenesis or hyphal anastomosis.

Matching UniProtKB/Swiss-Prot entries

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2 entries grouped by strain

2 entries

Helminthosporium victoriae virus-190S (Hv190SV) reference strain

CAPSD_HV19S Major capsid protein (Major coat protein)
RDRP_HV19S Probable RNA-directed RNA polymerase (EC
These structures were created with the help of Colabfold by Jason Nomburg, Nathan Price and Jennifer Doudna (ModelArchive).

Beauveria bassiana victorivirus NZL/1980 taxid:1485922

Protein ModelArchive
Coat protein ma-jd-viral-15413
RNA-directed RNA polymerase (EC ma-jd-viral-19836

Botryosphaeria dothidea victorivirus 1 taxid:1547580

Protein ModelArchive
Coat protein ma-jd-viral-15419
RNA-directed RNA polymerase (EC ma-jd-viral-19848

Chalara elegans RNA Virus 1 taxid:267285

Protein ModelArchive
Coat protein ma-jd-viral-15410

Fusarium poae victorivirus 1 taxid:1849535

Protein ModelArchive
Capsid protein ma-jd-viral-15406
RNA-directed RNA polymerase (EC ma-jd-viral-19831

Gremmeniella abietina RNA virus L1 taxid:152217

Protein ModelArchive
Putative coat protein ma-jd-viral-15417

Magnaporthe oryzae virus 2 taxid:441999

Protein ModelArchive
Coat protein ma-jd-viral-15416
RNA-directed RNA polymerase (EC ma-jd-viral-19832

Magnaporthe oryzae virus 3 taxid:1661396

Protein ModelArchive
Putative coat protein ma-jd-viral-15407
RNA-directed RNA polymerase (EC ma-jd-viral-19827

Nigrospora oryzae victorivirus 1 taxid:1765736

Protein ModelArchive
Coat protein ma-jd-viral-15411
RNA-directed RNA polymerase (EC ma-jd-viral-19833

Phomopsis vexans RNA virus taxid:1580605

Protein ModelArchive
Coat protein ma-jd-viral-15420
RNA-directed RNA polymerase (EC ma-jd-viral-19844

Rosellinia necatrix victorivirus 1 taxid:1148491

Protein ModelArchive
Putative capsid protein ma-jd-viral-15418
RNA-directed RNA polymerase (EC ma-jd-viral-19830

Sclerotinia nivalis victorivirus 1 taxid:1859161

Protein ModelArchive
Coat protein ma-jd-viral-15408
RNA-directed RNA polymerase (EC ma-jd-viral-19851

Tolypocladium cylindrosporum virus 1 taxid:939923

Protein ModelArchive
Coat protein ma-jd-viral-15404
RNA-directed RNA polymerase (EC ma-jd-viral-19840

Ustilaginoidea virens RNA virus 1 taxid:1312445

Protein ModelArchive
Putative coat protein ma-jd-viral-15405
RNA-directed RNA polymerase (EC ma-jd-viral-19843

Ustilaginoidea virens RNA virus 3 taxid:1460374

Protein ModelArchive
Coat protein ma-jd-viral-15414
RNA-directed RNA polymerase (EC ma-jd-viral-19828

Ustilaginoidea virens RNA virus 5 taxid:1756615

Protein ModelArchive
Coat protein ma-jd-viral-15412
RNA-directed RNA polymerase (EC ma-jd-viral-19829

Ustilaginoidea virens RNA virus L taxid:1561171

Protein ModelArchive
Coat protein ma-jd-viral-15424
RNA-directed RNA polymerase (EC ma-jd-viral-19850

Ustilaginoidea virens RNA virus M taxid:1561172

Protein ModelArchive
RNA-directed RNA polymerase (EC ma-jd-viral-19739