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Giardiavirus

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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 currently only one species in this genus: the type species Giardia lamblia virus.[1][2]

Structure

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

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

The genus Giardiavirus has on species:[2]

  • Giardia lamblia virus

References

  1. ^ a b c "Viral Zone". ExPASy. Retrieved 15 June 2015.
  2. ^ a b ICTV. "Virus Taxonomy: 2014 Release". Retrieved 15 June 2015.