Spounavirinae

Spounavirinae is a subfamily of viruses in the order Caudovirales, in the family Herelleviridae.[1][2] Bacteria serve as natural hosts. There are currently five species in this subfamily, divided among 2 genera.[2][3]

Spounavirinae
Virus classification
(unranked): Virus
Realm: Duplodnaviria
Kingdom: Heunggongvirae
Phylum: Uroviricota
Class: Caudoviricetes
Order: Caudovirales
Family: Herelleviridae
Subfamily: Spounavirinae
Genera

Taxonomy

Group: dsDNA

[2]

Structure

Viruses in the subfamily 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.[2][3]

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.[2][3]

References
  1. Barylski, J; Kropinski, AM; Alikhan, NF; Adriaenssens, EM; ICTV Report Consortium (April 2020). "ICTV Virus Taxonomy Profile: Herelleviridae". The Journal of General Virology. 101 (4): 362–363. doi:10.1099/jgv.0.001392. PMID 32022658.
  2. "ICTV Report Herelleviridae".
  3. "Viral Zone". ExPASy. Retrieved 1 July 2015.


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