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Giardiavirus

From Wikipedia, the free encyclopedia

Giardia lamblia virus
Cryo-EM reconstruction of Giardia lamblia virus (GLV) particle
color based on distance from center
Virus classification Edit this classification
(unranked): Virus
Realm: Riboviria
Kingdom: Orthornavirae
Phylum: Duplornaviricota
Class: Chrymotiviricetes
Order: Ghabrivirales
Family: Totiviridae
Genus: Giardiavirus
Species:
Giardia lamblia virus

Giardiavirus is a genus of viruses, in the family Totiviridae. Protozoa serve as natural hosts. There is only one species in this genus: Giardia lamblia virus.[1][2]

Structure

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Viruses in Giardiavirus are non-enveloped, with icosahedral geometries, and T=2 symmetry. The diameter is around 36 nm. Genomes are linear, around 6277kb in length. The genome has 2 open reading frames.[1]

Genus Structure Symmetry Capsid Genomic arrangement Genomic segmentation
Giardiavirus Icosahedral T=2 Non-enveloped Linear Monopartite

Life cycle

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Viral replication is cytoplasmic. Entry into the host cell is achieved by attachment to host receptors, which mediates endocytosis. Replication follows the double-stranded RNA virus replication model. Double-stranded rna virus transcription is the method of transcription. Translation takes place by -1 ribosomal frameshifting, and viral initiation. Protozoa serve as the natural host.[1]

Genus Host details Tissue tropism Entry details Release details Replication site Assembly site Transmission
Giardiavirus Protozoa None Cell receptor endocytosis Exocytosis Cytoplasm Cytoplasm Passive diffusion

Taxonomy

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The genus Giardiavirus has one species:[2]

  • Giardia lamblia virus

References

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  1. ^ a b c "Viral Zone". ExPASy. Retrieved 15 June 2015.
  2. ^ a b "Virus Taxonomy: 2020 Release". International Committee on Taxonomy of Viruses (ICTV). March 2021. Retrieved 13 May 2021.
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