Ignicoccus
Ignicoccus | |
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Ignicoccus hospitalis (with two smaller, symbiotic Nanoarchaeum equitans) | |
Scientific classification | |
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Genus: | Ignicoccus Huber, Burggraf, Mayer, Wyschkony, Rachel & Stetter 2000
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Type species | |
Ignicoccus islandicus Huber & Stetter 2000
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Ignicoccus is a genus of hyperthermophillic Archaea living in marine hydrothermal vents. They were discovered in samples taken at the Kolbeinsey Ridge north of Iceland, as well as at the East Pacific Rise (at 9 degrees N, 104 degrees W) in 2000.[1]
Systematics
According to the comparisons of 16S rRNA genes, Ignicoccus represents a new, deeply branching lineage within the family of the Desulfurococcaceae.[2] Three species are known: I. islandicus,[1] I. pacificus[1] and I. hospitalis strain KIN4I.[3]
Cell structure
The archaea of the genus Ignicoccus have tiny
They have a previously unknown
The two layers of membrane previously reported are actually a type of
Physiology
Ignicocci live in a temperature range of 70–98 °C (optimum around 90 °C). They gain energy by reduction of elemental sulfur to hydrogen sulfide using molecular hydrogen as the electron donor.[2] A unique symbiosis with (or parasitism by) Nanoarchaeum equitans has also been reported.[2]
Phylogeny
The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN) [5] and National Center for Biotechnology Information (NCBI)[6]
16S rRNA based | 53 marker proteins based GTDB 08-RS214[10][11][12] | ||||||||||||||||||||||||
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See also
References
- ^ PMID 11155984.
- ^ S2CID 4395094.
- ^ PMID 28659892.
- ^ PMID 15803654.
- ^ J.P. Euzéby. "Ignicoccus". List of Prokaryotic names with Standing in Nomenclature (LPSN). Retrieved 2023-06-10.
- ^ Sayers; et al. "Ignicoccus". National Center for Biotechnology Information (NCBI) taxonomy database. Retrieved 2023-06-10.
- ^ "The LTP". Retrieved 10 May 2023.
- ^ "LTP_all tree in newick format". Retrieved 10 May 2023.
- ^ "LTP_06_2022 Release Notes" (PDF). Retrieved 10 May 2023.
- ^ "GTDB release 08-RS214". Genome Taxonomy Database. Retrieved 10 May 2023.
- ^ "ar53_r214.sp_label". Genome Taxonomy Database. Retrieved 10 May 2023.
- ^ "Taxon History". Genome Taxonomy Database. Retrieved 10 May 2023.
Further reading
- Huber H, Kueper U, Daxer S, Rachel R (August 2012). "The unusual cell biology of the hyperthermophilic Crenarchaeon Ignicoccus hospitalis". Antonie van Leeuwenhoek. 102 (2): 203–219. S2CID 7732441.
- Nass B, Poll U, Langer JD, Kreuter L, Kuper U, Flechsler J, Heimer T, Rachel R, Huber H, Kletzin A (2014). "Three multihaem cytochromes c from the hyperthermophilic archaeon Ignicoccus hospitalis: purification, properties and localization". Microbiology. 6 (160): 1278–1289. PMID 24705227.