Thaspiviridae
Nitmarvirus | |
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TEM image of virions of Nitrosopumilus spindle-shaped virus 1 (Nitmarvirus NSV1). | |
Virus classification | |
(unranked): | Virus |
Family: | Thaspiviridae |
Genus: | Nitmarvirus |
Species | |
| |
Synonyms | |
Nitmarvirus NSV1
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Thaspiviridae is a family of incertae sedis spindle-shaped viruses. The family contains a single genus, Nitmarvirus, which contains a single species, Nitmarvirus NSV1.[1]
Thaspiviridae are known to infect mesophilic
Structure
The virion is spindle-shaped, measuring 64±3 nm in diameter and 112±6 nm in length, with short fibres at one pole. Its morphology is very similar to that of the members of the families Fuselloviridae and Halspiviridae, which infect hyperthermophilic and hyperhalophilic archaea, respectively.[2]
Genome
Its genome is linear
Replication
The virus is non-lytic (capable of exiting host cells without killing them), and chronic (can be demonstrated in the body at all times and the disease may be present or absent for an extended period of time). The virus genome is likely to be replicated by the virus-encoded protein-primed family B DNA polymerase, as has been inferred for other viruses. The virus also encodes a proliferating cell nuclear antigen which is also likely to be involved in viral genome replication.[2]
References
- ^ "Virus Taxonomy: 2022 Release". International Committee on Taxonomy of Viruses (ICTV). March 2023. Retrieved 19 August 2023.
- ^ PMID 34328827.