TACK
| TACK | |
|---|---|
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| Sulfolobus | |
Scientific classification 
| |
| Domain: | Archaea |
| Kingdom: | Proteoarchaeota |
| Superphylum: | TACK group Guy & Ettema 2011 |
| Phyla[1] | |
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| Synonyms | |
TACK is a group of
eukaryotes. It has been proposed that the TACK clade be classified as Crenarchaeota and that the traditional "Crenarchaeota" (Thermoproteota) be classified as a class called "Sulfolobia", along with the other phyla with class rank or order.[5]
Classification
- hyperthermophilesin hydrothermal vents and other groups are the most abundant at depths of less than 100 m.
- "Aigarchaeota". It is a phylum proposed from the genome of the candidate species Caldiarchaeum subterraneum found deep within a gold mine in Japan. Genomic sequences of this group have also been found in geothermal environments, both terrestrial and marine.
- "Geoarchaeota". It includes thermophilic organisms that live in acidic environments reducing ferric iron. Alternatively it has been proposed that this and earlier group actually belong to the phylum Nitrososphaerota.
- Nitrososphaerota (formerly Thaumarchaeota). It includes mesophilic or psychrophilic organisms (medium and low temperatures), of ammonia-oxidant chemolytoautotrophic metabolism (nitrifying) and that can play an important role in biochemical cycles, such as the nitrogen and carbon cycles.
- "Bathyarchaeota". It is abundant in the sediments of the seabed with a shortage of nutrients. At least some lineages develop through homoacetogenesis, a type of metabolism hitherto thought unique to bacteria.
- "Korarchaeota". They have only been found in hydrothermal environments and in low abundance. They seem diversified at different phylogenetic levels according to temperature, salinity (fresh or marine water) and geography.
Phylogeny
The relationships are roughly as follows:
| McKay et al. 2019[6] | 16S rRNA based | 53 marker proteins based GTDB 08-RS214[10][11][12] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Eocyte hypothesis
The
prokaryotic eocytes.[14]
One piece of evidence supporting a close relationship between TACK and eukaryotes is the presence of a homolog of the RNA polymerase subunit Rbp-8 in Thermoproteota but not in Euryarchaea.[15]
See also
References
- PMID 29522741.
- PMID 6587394.)
{{cite journal}}: CS1 maint: multiple names: authors list (link - PMID 26323753.
- PMID 22018741.
- PMID 31900730.
- ^ McKay, L.J., Dlakić, M., Fields, M.W. et al. Co-occurring genomic capacity for anaerobic methane and dissimilatory sulfur metabolisms discovered in the Korarchaeota. Nat Microbiol 4, 614–622 (2019) doi:10.1038/s41564-019-0362-4
- The All-Species Living Tree Project. Retrieved 10 May 2023.
- The All-Species Living Tree Project. Retrieved 10 May 2023.
- The All-Species Living Tree Project. 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.
- PMID 19073919.
- ^ (UCLA) The origin of the nucleus and the tree of life Archived 2003-02-07 at archive.today
- PMID 18384908.