| Picovirinae | |
|---|---|
Virus classification  | |
| (unranked): | Virus |
| Realm: | Duplodnaviria |
| Kingdom: | Heunggongvirae |
| Phylum: | Uroviricota |
| Class: | Caudoviricetes |
| Order: | Caudovirales (abolished 2021) |
| Family: | Salasmaviridae |
| Subfamily: | Picovirinae |
| Synonyms [1] | |
| |
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]
The following genera and species are recognized: [3]
Viruses in Picovirinae are non-enveloped, with icosahedral or prolate heads of about 50–55 nm in diameter, and short tails. Genomes are linear, double stranded DNA, and are relatively small (between 16–20 kbp)-hence the term pico-virinae. Picoviruses package linear, monomeric genomes with a terminal protein covalently attached to each end. [2]
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]