Picovirinae

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Picovirinae
Virus classification Edit this classification
(unranked): Virus
Realm: Duplodnaviria
Kingdom:
Heunggongvirae
Phylum: Uroviricota
Class: Caudoviricetes
Order: Caudovirales
Family: Salasmaviridae
Subfamily: Picovirinae
Synonyms[1]
  • Nanovirinae

Picovirinae is a subfamily of

viruses in the order Caudovirales, in the family Salasmaviridae. Bacteria serve as natural hosts. There are two genera and seven species in this subfamily.[2][3]

Taxonomy

The following genera and species are recognized:[3]

Structure

Viruses in Picovirinae are non-enveloped, with icosahedral or prolate heads of about 50โ€“55 nm in diameter, and short tails. Genomes are linear, double stranded DNA, and are relatively small (between 16โ€“20 kbp)-hence the term pico-virinae. Picoviruses package linear, monomeric genomes with a terminal protein covalently attached to each end.[2]

Life cycle

Viral replication is cytoplasmic. Entry into the host cell is achieved by adsorption into the host cell. Replication follows the DNA strand displacement model. DNA-templated transcription is the method of transcription. Bacteria serve as the natural host. Transmission routes are passive diffusion.[2]

References

  1. PMID 18555669
    .
  2. ^ a b c "Viral Zone". ExPASy. Retrieved 1 July 2015.
  3. ^ a b "Virus Taxonomy: 2020 Release". International Committee on Taxonomy of Viruses (ICTV). March 2021. Retrieved 12 May 2021.

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