Spiromicrovirus is a genus of viruses, in the family Microviridae, in the subfamily Gokushovirinae. Spiroplasma bacteria serve as natural hosts. There is only one species in this genus: Spiroplasma virus SpV4.[1][2]

Spiromicrovirus
Virus classification Edit this classification
(unranked): Virus
Realm: Monodnaviria
Kingdom: Sangervirae
Phylum: Phixviricota
Class: Malgrandaviricetes
Order: Petitvirales
Family: Microviridae
Subfamily: Gokushovirinae
Genus: Spiromicrovirus

Structure

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Viruses in Spiromicrovirus are non-enveloped, with icosahedral and round geometries, and T=1 symmetry. The diameter is around 30 nm. Genomes are circular, around 6.1kb in length.[1]

Genus Structure Symmetry Capsid Genomic arrangement Genomic segmentation
Spiromicrovirus Icosahedral T=1 Non-enveloped Circular Monopartite

Life cycle

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Viral replication is cytoplasmic. Entry into the host cell is achieved by pilus-mediated adsorption into the host cell. Replication follows the ssDNA rolling circle model. DNA-templated transcription is the method of transcription. The virus exits the host cell by bacteria lysis. Spiroplasma bacteria serve as the natural host.[1]

Genus Host details Tissue tropism Entry details Release details Replication site Assembly site Transmission
Spiromicrovirus Bacteria: spiroplasma None Pilus adsorption Lysis Cytoplasm Cytoplasm Pilus

References

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  1. ^ a b c "Viral Zone". ExPASy. Retrieved 15 June 2015.
  2. ^ "Virus Taxonomy: 2020 Release". International Committee on Taxonomy of Viruses (ICTV). March 2021. Retrieved 10 May 2021.
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