Labyrnavirus

Labyrnavirus is a monotypic genus of viruses in the order Picornavirales. Protist and labyrinthulomycetes serve as natural hosts, notably Aurantiochytrium. There is only one species in this genus: the type species Aurantiochytrium single-stranded RNA virus 01.[1][2]

Aurantiochytrium single-stranded RNA virus 01
Virus classification
(unranked): Virus
Realm: Riboviria
Kingdom: Orthornavirae
Phylum: Pisuviricota
Class: Pisoniviricetes
Order: Picornavirales
Family: Marnaviridae
Genus: Labyrnavirus
Species:
Aurantiochytrium single-stranded RNA virus 01

Structure

Viruses in Labyrnavirus are non-enveloped, with icosahedral, spherical, and round geometries, and T=pseudo3 symmetry. The diameter is around 25 nm. Genomes are linear and non-segmented, around 9kb in length. The genome has three open reading frames.[1]

GenusStructureSymmetryCapsidGenomic arrangementGenomic segmentation
LabyrnavirusIcosahedralPseudo T=3Non-envelopedLinearMonopartite

Life cycle

Viral replication is cytoplasmic. Entry into the host cell is achieved by attachment of the virus to host receptors, which mediates endocytosis. Replication follows the positive stranded RNA virus replication model. Positive stranded RNA virus transcription is the method of transcription. Protist and labyrinthulomycetes serve as the natural host.[1]

GenusHost detailsTissue tropismEntry detailsRelease detailsReplication siteAssembly siteTransmission
LabyrnavirusProtist, LabyrinthulomycetesNoneUnknownLysisCytoplasmCytoplasmUnknown

References
  1. "Viral Zone". ExPASy. Retrieved 13 August 2015.
  2. ICTV. "Virus Taxonomy: 2014 Release". Retrieved 13 August 2015.
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