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| Version | Summary | Created by | Modification | Content Size | Created at | Operation |
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| 1 | Vivi Li | -- | 1018 | 2022-10-20 01:46:40 |
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A satellite is a subviral agent that depends on the coinfection of a host cell with a helper virus for its replication. Satellites can be divided into two major classes: satellite viruses and satellite nucleic acids. Satellite viruses, which are most commonly associated with plants, are also found in mammals, arthropods, and bacteria. They encode structural proteins to enclose their genetic material, which are therefore distinct from the structural proteins of their helper viruses. Satellite nucleic acids, in contrast, do not encode their own structural proteins, but instead are encapsulated by proteins encoded by their helper viruses. The genomes of satellites range upward from 359 nucleotides in length for satellite tobacco ringspot virus RNA (STobRV). Most viruses have the capability to use host enzymes or their own replication machinery to independently replicate their own viral RNA. Satellites, in contrast, are completely dependent on a helper virus for replication. The symbiotic relationship between a satellite and a helper virus to catalyze the replication of a satellite genome is also dependent on the host to provide components like replicases to carry out replication. A satellite virus of mamavirus that inhibits the replication of its host has been termed a virophage. However, the usage of this term remains controversial due to the lack of fundamental differences between virophages and classical satellite viruses.
References
- Roossinck, M. J.; Sleat, D.; Palukaitis, P. (June 1992). "Satellite RNAs of plant viruses: structures and biological effects". Microbiological Reviews 56 (2): 265–279. doi:10.1128/MMBR.56.2.265-279.1992. ISSN 0146-0749. PMID 1620065. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=372867
- Hu, Chung-Chi; Hsu, Yau-Heiu; Lin, Na-Sheng (2009). "Satellite RNAs and Satellite Viruses of Plants". Viruses 1 (3): 1325–1350. doi:10.3390/v1031325. PMID 21994595. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3185516
- "Hepatitis D Virus". https://web.stanford.edu/group/virus/delta/2005/.
- "Hepatitis D: Background, Etiology, Epidemiology". https://emedicine.medscape.com/article/178038-overview.
- "3 - Satellites and Other Virus-dependent Nucleic Acids - Subviral Agents - Subviral Agents (2011)" (in en). https://talk.ictvonline.org/ictv-reports/ictv_9th_report/sub-viral-agents-2011/w/sub_viruses/302/3-satellites-and-other-virus-dependent-nucleic-acids. (newer version; does not mention satellites)
- Krupovic, Mart; Kuhn, Jens H.; Fischer, Matthias G. (7 October 2015). "A classification system for virophages and satellite viruses". Archives of Virology 161 (1): 233–247. doi:10.1007/s00705-015-2622-9. PMID 26446887. https://dx.doi.org/10.1007%2Fs00705-015-2622-9
- Taxoprop 2017.004P
- Taxoprop 2016.021a-kP
