Rudiviridae: Difference between revisions
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==Description and Significance== | ==Description and Significance== | ||
Rudiviridae is a family of recently discovered viruses which infect Crenarchaeota. | Rudiviridae is a family of recently discovered viruses which infect Crenarchaeota. Rudiviruses were first isolated from acidic hot springs in Iceland. (sources: Ortmann et al., [http://www.pnas.org/cgi/reprint/98/23/13341.pdf Rice et al.]) | ||
==Genome Structure== | ==Genome Structure== | ||
The Rudivirus genome is non-segmented and contains a molecule of linear, double-stranded DNA. The genome is 32 | The Rudivirus genome is non-segmented and contains a molecule of linear, double-stranded DNA. The genome is 32,312- 35,502 nucleotides long. The DNA forms a superhelix with a single basic 15.8-kD binding protein. The two strands of DNA are covalently linked to form a continuous polynucleotide chain. The DNA has three tail fibers at the end. (sources: [http://www.ncbi.nlm.hih.gov/ICTVdB/00.083.htm ICTVdB], [http://www.genetics.org/cgi/content/full/152/4/1387 Prangishvili et al.], Peng et al.) | ||
==Virion Structure of a Rudivirus== | ==Virion Structure of a Rudivirus== | ||
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[http://www.genetics.org/cgi/content/full/152/4/1387 Prangishvili et al. "A Novel Virus Family, the Rudiviridae: Structure, Virus-Host Interactions, and Genome Variability of the Sulfolobus Viruses SIRV1 and SIRV2." ''Genetics'' 152 (1999): 1387-1396.] | [http://www.genetics.org/cgi/content/full/152/4/1387 Prangishvili et al. "A Novel Virus Family, the Rudiviridae: Structure, Virus-Host Interactions, and Genome Variability of the Sulfolobus Viruses SIRV1 and SIRV2." ''Genetics'' 152 (1999): 1387-1396.] | ||
[http://www.pnas.org/cgi/reprint/98/23/13341.pdf Rice et al. "Viruses from extreme thermal environments." ''Proceedings of the National Academy of Sciences'' 98.23 (2001): 13341-13345.] | |||
Revision as of 20:45, 26 July 2006
Baltimore Classification
Higher order taxa
Viruses; dsDNA viruses, no RNA stage; Rudiviridae
Genera
Rudivirus
Description and Significance
Rudiviridae is a family of recently discovered viruses which infect Crenarchaeota. Rudiviruses were first isolated from acidic hot springs in Iceland. (sources: Ortmann et al., Rice et al.)
Genome Structure
The Rudivirus genome is non-segmented and contains a molecule of linear, double-stranded DNA. The genome is 32,312- 35,502 nucleotides long. The DNA forms a superhelix with a single basic 15.8-kD binding protein. The two strands of DNA are covalently linked to form a continuous polynucleotide chain. The DNA has three tail fibers at the end. (sources: ICTVdB, Prangishvili et al., Peng et al.)
Virion Structure of a Rudivirus
Rudivirus virions consist of a capsid. The capsid is a non-enveloped, elongated, rigid rod shape which exhibits icosahedral symmetry. The virion particles are 600-900 nm in length and 23 nm in width. Rudivirus virions resemble some RNA plant virus virions. (sources: ICTVdB, Ortmann et al.)
Reproduction Cycle of a Rudivirus in a Host Cell
Viral Ecology & Pathology
Rudiviruses infect only Sulfolobus and Acidianus species. (source: Ortmann et al.)
References
ICTVdB - The Universal Virus Database, version 4. http://www.ncbi.nlm.nih.gov/ICTVdb/ICTVdB/
Ortmann et al. "Hot crenarchaeal viruses reveal deep evolutionary connections." Nature Reviews Microbiology 4 (2006): 520-528.
Peng et al. "Sequences and Replication of Genomes of the Archaeal Rudiviruses SIRV1 and SIRV2: Relationships to the Archaeal Lipothrixvirus SIFV and Some Eukaryal Viruses." Virology 29.2 (2001): 226-234.
