Plasmaviridae

In today's world, Plasmaviridae has become increasingly important in society. Whether due to its impact on culture, politics, the economy or people's daily lives, Plasmaviridae has managed to position itself as a relevant topic of discussion and debate. Its influence extends to different fields and its presence is increasingly evident in various aspects of life. This is why it is relevant to fully explore the scope and implications of Plasmaviridae today, as well as analyze its evolution over time and its potential impact in the future. This article seeks to delve into the world of Plasmaviridae to understand its importance and relevance in contemporary society.

Plasmavirus
EM of a plasmavirus
Virus classification Edit this classification
(unranked): Virus
Family: Plasmaviridae
Genus: Plasmavirus
Species
  • Plasmavirus L2
Synonyms

Plasmavirus

  • Plasmavirus ICTV 1981
  • Mycoplasma virus type 2 phages ICTV 1978

Plasmavirus L2

  • Plasmavirus L2 ICTV 2021
  • Acholeplasma virus L2 ICTV 2015
  • Acholeplasma phage L2 ICTV 1991
  • Phage MV-L2 ICTV 1978

Plasmaviridae is a family of bacteria-infecting viruses. Acholeplasma species serve as natural hosts. There is one genus in the family, Plasmavirus, which contains one species: Acholeplasma phage L2 (Plasmavirus L2).[1][2][3] All viruses known in this family have been isolated from species in the class Mollicutes.

This family is poorly studied and little is known about the diversity and biology of these viruses.

Taxonomy

The family has one genus, Plasmavirus, which has one recognized member: Acholeplasma phage L2 (Plasmavirus L2).[4]

There are five tentative members of Plasmavirus:

Genome

The genome is condensed, nonsegmented and consists of a single molecule of circular, supercoiled double-stranded DNA, 12 kilobase pairs in length. The genome has a rather high G-C content of ~32%.[5] The genome has 14 open reading frames,[2] and encodes at least 15 proteins, of which at least four are structural proteins embedded in the membrane.[citation needed]

Structure

Virions are quasi-spherical, slightly pleomorphic, enveloped and about 80 nm (range 50–125 nm) in diameter.[1]

Genus Structure Symmetry Capsid Genomic arrangement Genomic segmentation
Plasmavirus Spherical to pleomorphic Undefined Enveloped Circular Monopartite

Life cycle

Viral replication is cytoplasmic. DNA-templated transcription is the method of transcription. The virus exits the host cell by budding. Acholeplasma species serve as the natural host.[2]

Genus Host details Tissue tropism Entry details Release details Replication site Assembly site Transmission
Plasmavirus Bacteria: Acholeplasma sp. None Fusion Membrane budding Cytoplasm Unknown Unknown

Infection

A productive infectious cycle begins before a lysogenic cycle establishes the virus in the infected bacteria. After initial infection of the viral genome the virus may become latent within the host. Lysogeny involves integration into the host chromosome.

References

  1. ^ a b Krupovic, M; ICTV Report Consortium (May 2018). "ICTV Virus Taxonomy Profile: Plasmaviridae". The Journal of General Virology. 99 (5): 617–618. doi:10.1099/jgv.0.001060. PMID 29611799.
  2. ^ a b c "Viral Zone". ExPASy. Retrieved 15 June 2015.
  3. ^ "Virus Taxonomy: 2020 Release". International Committee on Taxonomy of Viruses (ICTV). March 2021. Retrieved 24 May 2021.
  4. ^ "Species List: Plasmaviridae". International Committee on Taxonomy of Viruses. Retrieved 28 March 2025.
  5. ^ Büchen-Osmond, C. (Ed) (2003). 00.053. Plasmaviridae. In: ICTVdB—The Universal Virus Database, version 3. Büchen-Osmond, C. (Ed), ICTVdB Management, The Earth Institute and Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY, USA.