Spiromicrovirus

Spiromicrovirus is a genus of viruses, in the family Microviridae, in the subfamily Gokushovirinae. Spiroplasma bacteria serve as natural hosts. There is currently only one species in this genus: the type species Spiroplasma phage 4.[1][2]

Spiromicrovirus
Virus classification
(unranked): Virus
Realm: Monodnaviria
Kingdom: Sangervirae
Phylum: Phixviricota
Class: Malgrandaviricetes
Order: Petitvirales
Family: Microviridae
Subfamily: Gokushovirinae
Genus: Spiromicrovirus
Type species
Spiroplasma phage 4

Taxonomy

Group: ssDNA

[2]

Structure

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]

GenusStructureSymmetryCapsidGenomic arrangementGenomic segmentation
SpiromicrovirusIcosahedralT=1Non-envelopedCircularMonopartite

Life cycle

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]

GenusHost detailsTissue tropismEntry detailsRelease detailsReplication siteAssembly siteTransmission
SpiromicrovirusBacteria: spiroplasmaNonePilus adsorptionLysisCytoplasmCytoplasmPilus

References
  1. "Viral Zone". ExPASy. Retrieved 15 June 2015.
  2. ICTV. "Virus Taxonomy: 2014 Release". Retrieved 15 June 2015.
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