Picovirinae
| Picovirinae | |
|---|---|
| Virus classification | |
| Group: | Group I (dsDNA) |
| Order: | Caudovirales |
| Family: | Podoviridae |
| Subfamily: | Picovirinae |
| Genera[1] | |
| Synonyms[2] | |
| |
Picovirinae is a subfamily of viruses in the order Caudovirales, in the family Podoviridae. Bacteria serve as natural hosts. There are currently nine species in this subfamily, divided among 2 genera.[3][4]
Taxonomy
Group: dsDNA
- Family: Podoviridae
- Sub-Family: Picovirinae
- Genus: Ahjdlikevirus
- Staphylococcus phage 44AHJD
- Streptococcus phage C1
- Genus: Phi29likevirus
- Bacillus phage B103
- Bacillus phage GA-1
- Bacillus phage phi29
- Kurthia phage 6
- Genus: Unassigned
- Actinomyces phage Av-1
- Mycoplasma phage P1
- Streptococcus phage Cp-1
Two bacteriophages in this family have been found to infect and lyse Clostridium perfringens.[5] Another virus (Weissella phage phiYS61) that has been isolated is so unlike the known members that it may belong to a new genus.[6]
Structure
Viruses in Picovirinae are non-enveloped, with icosahedral and head-tail geometries, and T=3 symmetry. The diameter is around 54 nm. Genomes are linear, double stranded DNA, and are relatively small (between 16-20 kbp)-hence the term pico-virinae.[3]
| Genus | Structure | Symmetry | Capsid | Genomic Arrangement | Genomic Segmentation |
|---|---|---|---|---|---|
| Phi29likevirus | Head-Tail | T=3, Q=5 | Non-Enveloped | Linear | Monopartite |
| Ahjdlikevirus | Head-Tail | T=4 | Non-Enveloped | Linear | Monopartite |
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. [3] They also use a typical protein primed DNA polymerase for replication, a property shared with the Tectiviridae family.
| Genus | Host Details | Tissue Tropism | Entry Details | Release Details | Replication Site | Assembly Site | Transmission |
|---|---|---|---|---|---|---|---|
| Phi29likevirus | Bacteria | None | Injection | Lysis | Cytoplasm | Cytoplasm | Passive diffusion |
| Ahjdlikevirus | Bacteria: gram positive | None | Injection | Lysis | Cytoplasm | Cytoplasm | Passive diffusion |
References
- ↑ "International Committee on Taxonomy of Viruses". ictvonline.org. Virology Division of IUMS. 2014. Retrieved August 14, 2014.
- ↑ Lavigne, R.; Seto, D.; Mahadevan, P.; Ackermann, H. W.; Kropinki, A. M. (2008). "Unifying classical and molecular taxonomic classification: analysis of the Podoviridae using BLASTP-based tools". Research in Microbiology 159 (5): 406–14. doi:10.1016/j.resmic.2008.03.005. PMID 18555669.
- 1 2 3 "Viral Zone". ExPASy. Retrieved 1 July 2015.
- 1 2 ICTV. "Virus Taxonomy: 2014 Release". Retrieved 1 July 2015.
- ↑ Volozhantsev, NV; Oakley, BB; Morales, CA; Verevkin, VV; Bannov, VA; Krasilnikova, VM; Popova, AV; Zhilenkov, EL; Garrish, JK; Schegg, KM; Woolsey, R; Quilici, DR; Line, JE; Hiett, KL; Siragusa, GR; Svetoch, EA; Seal, BS (2012). "Molecular characterization of podoviral bacteriophages virulent for Clostridium perfringens and their comparison with members of the Picovirinae.". PLOS ONE 7 (5): e38283. doi:10.1371/journal.pone.0038283. PMID 22666499. Cite uses deprecated parameter
|coauthors=(help) - ↑ Kleppen HP, Holo H, Jeon SR, Nes IF, Yoon SS (2012) A novel bacteriophage of the Podoviridae family infecting Weissella cibaria isolated from kimchi. Appl Environ Microbiol doi:10.1128/AEM.00031-12