Spounavirinae

Spounavirinae
Virus classification
Group: Group I (dsDNA)
Order: Caudovirales
Family: Myoviridae
Subfamily: Spounavirinae
Genera

Spounavirinae is a subfamily of viruses in the order Caudovirales, in the family Myoviridae. Bacteria serve as natural hosts. There are currently eight species in this subfamily, divided among 2 genera.[1][2]

Taxonomy

Group: dsDNA

[2]

Structure

Viruses in Spounavirinae are non-enveloped, with icosahedral and Head-tail geometries, and T=16 symmetry. The diameter is around 84-94 nm, with a length of 140-219 in length, contractile with globular structures at its tip, has 6 long terminal fibers, 6 short spikes and a double base platenm. Genomes are circular, around 130-160kb in length. The genome codes for 190 to 230 proteins.[1]

Genus Structure Symmetry Capsid Genomic Arrangement Genomic Segmentation
SpounalikevirusHead-TailT=16Non-EnvelopedLinearMonopartite
TwortlikevirusHead-TailT=16Non-EnvelopedLinearMonopartite

Life Cycle

Viral replication is cytoplasmic. Entry into the host cell is achieved by adsorption into the host cell. DNA-templated transcription is the method of transcription. Bacteria serve as the natural host. Transmission routes are passive diffusion.[1]

Genus Host Details Tissue Tropism Entry Details Release Details Replication Site Assembly Site Transmission
SpounalikevirusBacteriaNoneInjectionLysisCytoplasmCytoplasmPassive diffusion
TwortlikevirusBacteriaNoneInjectionLysisCytoplasmCytoplasmPassive diffusion

References

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