Spiromicrovirus

Spiromicrovirus
Virus classification
Group:	Group II (ssDNA)
Family:	Microviridae
Subfamily:	Gokushovirinae
Genus:	Spiromicrovirus
Type Species
Spiroplasma phage 4

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]

Taxonomy

Group: ssDNA

Order: Unassigned

Family: Microviridae
- Sub-Family: Gokushovirinae
  - Genus: Spiromicrovirus
    
    Spiroplasma phage 4

^[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]

Genus	Structure	Symmetry	Capsid	Genomic Arrangement	Genomic Segmentation
Spiromicrovirus	Icosahedral	T=1	Non-Enveloped	Circular	Monopartite

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]

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

1 2 3 "Viral Zone". ExPASy. Retrieved 15 June 2015.
1 2 ICTV. "Virus Taxonomy: 2014 Release". Retrieved 15 June 2015.

External Links

Baltimore (virus classification)

DNA

I: dsDNA viruses

Caudovirales	Myoviridae Podoviridae Siphoviridae

Herpesvirales	Alloherpesviridae Herpesviridae Malacoherpesviridae

Ligamenvirales	Lipothrixviridae Rudiviridae

Unassigned	NLCDV: Ascoviridae Asfarviridae Iridoviridae Marseilleviridae Mimiviridae Phycodnaviridae Poxviridae genera: Dinodnavirus nonenveloped: Adenoviridae Papillomaviridae Papovaviridae (obsolete) Polyomaviridae genera: Rhizidiovirus Ampullaviridae Baculoviridae Bicaudaviridae Clavaviridae Corticoviridae Fuselloviridae Globuloviridae Guttaviridae Hytrosaviridae Nimaviridae Nudiviridae Plasmaviridae Polydnaviridae Sphaerolipoviridae Tectiviridae Turriviridae genera: Salterprovirus

II: ssDNA viruses

Anelloviridae Bidnaviridae Circoviridae Geminiviridae Inoviridae Microviridae Nanoviridae Parvoviridae Spiraviridae genera: Bacilladnavirus

RNA

III: dsRNA viruses

Amalgaviridae Birnaviridae Chrysoviridae Cystoviridae Endornaviridae Hypoviridae Megabirnaviridae Partitiviridae Picobirnaviridae Quadriviridae Reoviridae Totiviridae

IV: (+)ssRNA viruses (primarily icosahedral)

Nidovirales	Arteriviridae Coronaviridae Mesoniviridae Roniviridae

Picornavirales	Comoviridae (obsolete) Dicistroviridae Iflaviridae Marnaviridae Picornaviridae Secoviridae Sequiviridae (obsolete) genera: Bacillarnavirus Labyrnavirus

Tymovirales	Alphaflexiviridae Betaflexiviridae Gammaflexiviridae Tymoviridae

Unassigned	Alphatetraviridae Alvernaviridae Astroviridae Barnaviridae Benyviridae Bromoviridae Caliciviridae Carmotetraviridae Closteroviridae Flaviviridae Flexiviridae (obsolete) Hepeviridae Leviviridae Luteoviridae Narnaviridae Nodaviridae Permutotetraviridae Potyviridae Tetraviridae (obsolete) Togaviridae Tombusviridae Virgaviridae genera: Cilevirus Higrevirus Idaeovirus Ourmiavirus Polemovirus Sobemovirus

V: (-)ssRNA viruses (primarily helical)

Mononegavirales	Bornaviridae Filoviridae Nyamiviridae Paramyxoviridae Rhabdoviridae

Unassigned	Arenaviridae Bunyaviridae Ophioviridae Orthomyxoviridae genera: Deltavirus Emaravirus Tenuivirus Varicosavirus

VI: ssRNA-RT viruses

Metaviridae Pseudoviridae Retroviridae

VII: dsDNA-RT viruses

Caulimoviridae Hepadnaviridae

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