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ICTV Virus Taxonomy Profile: Spiraviridae
David Prangishvili1,2, Tomohiro Mochizuki3, Mart Krupovic1
1Institut Pasteur, Archaeal Virology Unit, Department of Microbiology, 75015 Paris, France.
The Journal of General Virology
|January 22, 2020
Summary
The Spiraviridae family comprises unique viruses replicating in hyperthermophilic archaea. These viruses feature a distinctive hollow, cylindrical structure with a single-stranded DNA genome.
Area of Science:
- Virology
- Archaea Biology
- Molecular Biology
Background:
- The family Spiraviridae encompasses viruses that infect hyperthermophilic archaea.
- These archaea belong to the genus Aeropyrum.
- Understanding these viruses is crucial for archaeal virology.
Purpose of the Study:
- To summarize the International Committee on Taxonomy of Viruses (ICTV) report on the family Spiraviridae.
- To provide an overview of the characteristics of Spiraviridae viruses.
Main Methods:
- The study is based on the official ICTV report.
- Information is compiled from existing taxonomic and scientific literature.
Main Results:
- Spiraviridae are non-enveloped viruses with a hollow, cylindrical virion structure.
- Virions are composed of a single circular nucleoprotein filament, coiled into two halves.
- A short appendage is present at each end of the virion.
- The genome is a circular, positive-sense, single-stranded DNA molecule of 24,893 nucleotides.
Conclusions:
- Spiraviridae represent a distinct viral family with unique morphology and replication strategy.
- The ICTV report provides a standardized classification and description of this viral family.
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