Satellite (biology)

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Satellite
Virus classification
(unranked)Subviral agents
(unranked)Satellite
Groups
Satellite viruses
Satellite nucleic acids
Satellites are subviral agents composed of nucleic acids; they depend for their multiplication on coinfection of a host cell with a helper virus (also known as the master virus).

When a satellite encodes the coat protein in which its nucleic acid is encapsidated it is referred to as a satellite virus.

They should not be confused with satellite DNA.

Classification

  • Satellite viruses
  • Single-stranded RNA satellite viruses
  • Subgroup 1: Chronic bee-paralysis virus associated satellite
  • Chronic bee-paralysis satellite virus
  • Subgroup 2: Tobacco necrosis virus satellite
  • Maize white line mosaic satellite virus
  • Panicum mosaic satellite virus
  • Tobacco mosaic satellite virus
  • Tobacco necrosis satellite virus
  • Satellite nucleic acids
  • Single-stranded satellite DNAs
  • Tomato leaf curl virus satellite DNA
  • Double-stranded satellite RNAs
  • Saccharomyces cerevisiae M virus satellite
  • Trichomonas vaginalis T1 virus satellite
  • Single-stranded satellite RNAs
  • Subgroup 1: Large satellite RNAs
  • Arabis mosaic virus large satellite RNA
  • Bamboo mosaic virus satellite RNA
  • Chicory yellow mottle virus large satellite RNA
  • Grapevine Bulgarian latent virus satellite RNA
  • Grapevine fanleaf virus satellite RNA
  • Myrobalan latent ringspot virus satellite RNA
  • Tomato black ring virus satellite RNA
  • Beet ringspot virus satellite RNA
  • Subgroup 2: Small linear satellite RNAs
  • Cucumber mosaic virus satellite RNA
  • Cymbidium ringspot virus satellite RNA
  • Pea enation mosaic virus satellite RNA
  • Groundnut rosette virus satellite RNA
  • Panicum mosaic virus small satellite RNA
  • Peanut stunt virus satellite RNA
  • Turnip crinkle virus satellite RNA
  • Tomato bushy stunt virus satellite RNA, B10
  • Tomato bushy stunt virus satellite RNA, B1
  • Subgroup 3: Circular satellite RNAs, or "virusoids"
  • Arabis mosaic virus small satellite RNA
  • Cereal yellow dwarf virus-RPV satellite RNA
  • Chicory yellow mottle virus satellite RNA
  • Lucerne transient streak virus satellite RNA
  • Solanum nodiflorum mottle virus satellite RNA
  • Subterranean clover mottle virus satellite RNA
  • Tobacco ringspot virus satellite RNA
  • Velvet tobacco mottle virus satellite RNA

External links

See also

Virus classification involves naming and placing viruses into a taxonomic system. Like the relatively consistent classification systems seen for cellular organisms, virus classification is the subject of ongoing debate and proposals.
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A nucleic acid is a macromolecule composed of nucleotide chains. In biochemistry these molecules carry genetic information or form structures within cells. The most common nucleic acids are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA).
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In virology, coinfection describes the simultaneous infection of a single cell by two or more virus particles. Compare to superinfection.
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Proteins are large organic compounds made of amino acids arranged in a linear chain and joined together by peptide bonds between the carboxyl and amino groups of adjacent amino acid residues.
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capsid is the protein shell of a virus. It consists of several oligomeric subunits made of protein. The capsid encloses the genetic material of the virus.

Capsids are broadly classified according to their structure.
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Satellite DNA consists of highly repetitive DNA, and is so called because repetitions of a short DNA sequence tend to produce a different frequency of the nucleotides adenine, cytosine, guanine and thymine, and thus have a different density from bulk DNA - such that they form a
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Left: An RNA strand, with its nitrogenous bases. Right: Double-stranded DNA.]] Ribonucleic acid or RNA is a nucleic acid polymer consisting of nucleotide monomers, which plays several important roles in the processes of translating genetic information from
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Panicum mosaic satellite virus is a plant pathogenic virus..

External links

  • ICTVdB - The Universal Virus Database: Panicum mosaic satellite virus
  • Family Groups - The Baltimore Method

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The Satellite Tobacco Mosaic Virus or Tobacco mosaic satellivirus was first reported in Nicotiana glauca from southern California, U.S.A. by Valverde and Dodds. Its genome consists of linear single-stranded RNA.
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Left: An RNA strand, with its nitrogenous bases. Right: Double-stranded DNA.]] Ribonucleic acid or RNA is a nucleic acid polymer consisting of nucleotide monomers, which plays several important roles in the processes of translating genetic information from
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A virusoid is an infectious agent that infects plants in conjunction with an assistant virus; the assistant virus harbors the virusoid and is required for successful infection.
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Virus classification involves naming and placing viruses into a taxonomic system. Like the relatively consistent classification systems seen for cellular organisms, virus classification is the subject of ongoing debate and proposals.
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A virusoid is an infectious agent that infects plants in conjunction with an assistant virus; the assistant virus harbors the virusoid and is required for successful infection.
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Viroids are plant pathogens that consist of a short stretch (a few hundred nucleobases) of highly complementary, circular, single-stranded RNA without the protein coat that is typical for viruses.
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Satellite DNA consists of highly repetitive DNA, and is so called because repetitions of a short DNA sequence tend to produce a different frequency of the nucleotides adenine, cytosine, guanine and thymine, and thus have a different density from bulk DNA - such that they form a
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minisatellite is a section of DNA that consists of a short series of bases 10-100bp, these occur at more than 1000 locations in the human genome. Some minisatellites contain a central (or "core") sequence of letters “GGGCAGGAXG” (where X can be any letter) or more
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Microsatellites, or Simple Sequence Repeats (SSRs), are polymorphic loci present in nuclear DNA and organellar DNA that consist of repeating units of 1-4 base pairs in length.
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