Pandoravirus
Pandoravirus is a genus of very large viruses. They have the largest genomes of any viral genus.[3] Like the other large viruses Mimivirus, Pithovirus and Megavirus, Pandoravirus infects amoebas. Its genome, with 1.9 to 2.5 megabases of DNA, is twice as large as that of Megavirus.[4] It differs greatly from the other large viruses in appearance and in genome structure.[5]
| Pandoravirus | |
|---|---|
| Virus classification | |
| Group: | Group I (dsDNA)
|
| Order: | |
| Family: | |
| Genus: | Pandoravirus
|
| Species | |
Although the capsid of Pithovirus is 50% larger in size,[6] Pandoravirus has the largest genome of all viruses (2.5 million base pairs).[5]
About 93% of Pandoravirus genes are not known from any other microbes.[7] This led some scientists to suggest the virus belongs to a "fourth domain", aside from Bacteria, Archaea, and Eukaryotes.[7] Viruses as a whole are not considered to be within these three domains, but they have been proposed as one in the past by some biologists.[8]
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- ↑ "Pandoravirus dulcis". NCBI Taxonomy Browser. 1349409.
- ↑ "Pandoravirus salinus". NCBI Taxonomy Browser. 1349410.
- ↑ Yong, Ed (2014). "Giant virus resurrected from 30,000-year-old ice: Nature News & Comment". Nature. doi:10.1038/nature.2014.14801. S2CID 87146458.
- ↑ A megabase is a million base pairs of nucleic acids.
- ↑ 5.0 5.1 Brumfiel, Geoff (18 July 2013). "World's biggest virus may have ancient roots". National Public Radio. Retrieved 18 July 2013.
- ↑ Sirucek, Stefan (3 March 2014). "Ancient "giant virus" revived from Siberian permafrost". National Geographic.
- ↑ 7.0 7.1 Dell'Amore, Christine (19 July 2013). "Biggest Virus Yet Found, May Be Fourth Domain of Life?". National Geographic. Retrieved 20 March 2018.
- ↑ Berezow, Alex B. (16 November 2014). "Simmer Down: Viruses Not 'Fourth Domain' of Life | RealClearScience". realclearscience. Retrieved 20 March 2018.