Difference between revisions of "Fuselloviridae"

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==Description and Significance==
 
==Description and Significance==
  
Fuselloviridae is an archaeal virus. It infects Sulfolobus, growing at pH2 at 20ºC.
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Fuselloviridae infect the archaeon [[Sulfolobus]], which inhabits high-temperature (>70°C), acidic (pH of <4.0) environments.  The Fuselloviridae family currently consists of only one virus, ''Sulfolobus'' spindle-shaped virus 1 (SSV1), and three tentative members (SSV2, SSV3, and  the staaelite virus pSSVx, which stands for plasmid SSV x). SSV1, the type virus for the family, was the first high-temperature virus to be characterized.  (source: [http://jvi.asm.org/cgi/content/full/78/4/1954?view=long&pmid=14747560 Wiedenheft et al.])
  
 
==Genome Structure==
 
==Genome Structure==
  
The genome of a fuselloviridae is not segmented and contains a single molecule of circular, positively supercoiled, double stranded DNA. The complete genome is 15500 nucleotides long. (source: [http://www.ncbi.nlm.nih.gov/ICTVdb/ICTVdB/00.028.htm ICTV dB Descriptions])
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The genome of a fuselloviridae is non-segmented and contains a single molecule of circular, double-stranded DNA.  The DNA is positively supercoiled. The complete genome is 15500 nucleotides in length. (source: [http://www.ncbi.nlm.nih.gov/ICTVdb/ICTVdB/28000000.htm ICTVdB])
  
 
==Virion Structure of a Fuselloviridae==
 
==Virion Structure of a Fuselloviridae==
  
The virions of fuselloviridae consist of an envelope and a nucleocapsid. The capsid is enveloped. Virions are lemon-shaped; flexible and have protrusions that extend through the envelope. One pole has short tail-like fibers attached to it. The virions are 100 nm long and 60 nm in diameter.  
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Fuselloviridae virions consist of an envelope and a nucleocapsid. The capsid is enveloped. Virions are spindle-shaped, flexible, and have protrusions that extend through the envelope. One pole has short tail-like fibers attached to it. The virions are 100 nm in length and 60 nm in diameter. (sources: [http://www.ncbi.nlm.nih.gov/ICTVdb/ICTVdB/28000000.htm ICTVdB], [http://jvi.asm.org/cgi/content/full/78/4/1954?view=long&pmid=14747560 Wiedenheft et al.])
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==Reproduction Cycle of a Fuselloviridae in a Host Cell==
  
The virion population is comprised such that some particles are of different sizes. Some particles are 1 % while some particles are larger and measure 300 nm in length. (source: [http://www.ncbi.nlm.nih.gov/ICTVdb/ICTVdB/00.028.htm ICTV dB Descriptions])
 
  
==Reproduction Cycle of a Fuselloviridae in a Host Cell==
 
  
 
==Viral Ecology & Pathology==
 
==Viral Ecology & Pathology==
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As mentioned above, viruses in the Fuselloviridae family infect the archaeon [[Sulfolobus]]. 
  
 
==References==
 
==References==
  
[http://www.ncbi.nlm.nih.gov/ICTVdb/ICTVdB/00.028.htm ICTV dB Descriptions]
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[http://www.ncbi.nlm.nih.gov/ICTVdb/ICTVdB/28000000.htm ICTVdB - The Universal Virus Database, version 3. http://www.ncbi.nlm.nih.gov/ICTVdb/ICTVdB/]
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[http://jvi.asm.org/cgi/content/full/78/4/1954?view=long&pmid=14747560 Wiedenheft et al.  "Comparative Genomic Analysis of Hyperthermophilic Archaeal Fuselloviridae Viruses."  ''Journal of Virology'' 78.4 (2004): 1954-1961.]

Revision as of 20:50, 11 July 2006

EM image of Fuselloviridae. Courtesy ICTV dB Descriptions

Baltimore Classification

Higher order taxa

Viruses; dsDNA viruses, no RNA stage; Fuselloviridae

Genera

Fusellovirus

Description and Significance

Fuselloviridae infect the archaeon Sulfolobus, which inhabits high-temperature (>70°C), acidic (pH of <4.0) environments. The Fuselloviridae family currently consists of only one virus, Sulfolobus spindle-shaped virus 1 (SSV1), and three tentative members (SSV2, SSV3, and the staaelite virus pSSVx, which stands for plasmid SSV x). SSV1, the type virus for the family, was the first high-temperature virus to be characterized. (source: Wiedenheft et al.)

Genome Structure

The genome of a fuselloviridae is non-segmented and contains a single molecule of circular, double-stranded DNA. The DNA is positively supercoiled. The complete genome is 15500 nucleotides in length. (source: ICTVdB)

Virion Structure of a Fuselloviridae

Fuselloviridae virions consist of an envelope and a nucleocapsid. The capsid is enveloped. Virions are spindle-shaped, flexible, and have protrusions that extend through the envelope. One pole has short tail-like fibers attached to it. The virions are 100 nm in length and 60 nm in diameter. (sources: ICTVdB, Wiedenheft et al.)

Reproduction Cycle of a Fuselloviridae in a Host Cell

Viral Ecology & Pathology

As mentioned above, viruses in the Fuselloviridae family infect the archaeon Sulfolobus.

References

ICTVdB - The Universal Virus Database, version 3. http://www.ncbi.nlm.nih.gov/ICTVdb/ICTVdB/

Wiedenheft et al. "Comparative Genomic Analysis of Hyperthermophilic Archaeal Fuselloviridae Viruses." Journal of Virology 78.4 (2004): 1954-1961.